diff --git a/ytdl_subscribe/subscriptions/subscription.py b/ytdl_subscribe/subscriptions/subscription.py
index ddc6fe21..f4d7e7e6 100644
--- a/ytdl_subscribe/subscriptions/subscription.py
+++ b/ytdl_subscribe/subscriptions/subscription.py
@@ -108,10 +108,14 @@ class Subscription(object):
             custom_root=nfo_options.nfo_root.value,
             attr_type=False,
         )
-        nfo_file_path = entry.apply_formatter(
+
+        nfo_file_name = entry.apply_formatter(
             format_string=nfo_options.nfo_name.format_string,
             overrides=self.overrides.dict,
         )
+        nfo_file_path = Path(self.output_options.output_directory.value) / Path(
+            nfo_file_name
+        )
         with open(nfo_file_path, "wb") as f:
             f.write(xml)
 
diff --git a/ytdl_subscribe/validators/base/strict_dict_validator.py b/ytdl_subscribe/validators/base/strict_dict_validator.py
index 8ef504cc..e0feb27f 100644
--- a/ytdl_subscribe/validators/base/strict_dict_validator.py
+++ b/ytdl_subscribe/validators/base/strict_dict_validator.py
@@ -10,21 +10,21 @@ class StrictDictValidator(DictValidator):
     Validates dictionary-based fields with required and optional keys.
     """
 
-    required_keys: Set[str] = set()
-    optional_keys: Set[str] = set()
-    allow_extra_keys = False
+    _required_keys: Set[str] = set()
+    _optional_keys: Set[str] = set()
+    _allow_extra_keys = False
 
     def __init__(self, name, value):
         super().__init__(name, value)
 
-        if len(self.allowed_keys) == 0:
+        if len(self._allowed_keys) == 0:
             raise ValueError(
                 "No required or optional keys defined when using a StrictDictValidator. "
                 "Should be using DictValidator instead."
             )
 
         # Ensure all required keys are present
-        for required_key in self.required_keys:
+        for required_key in self._required_keys:
             if required_key not in self.value:
                 raise self._validation_exception(
                     f"missing the required field '{required_key}'"
@@ -34,24 +34,24 @@ class StrictDictValidator(DictValidator):
         if not self.dict:
             raise self._validation_exception(
                 f"at least one of the following fields must be defined: "
-                f"{', '.join(self.optional_keys)}'"
+                f"{', '.join(self._optional_keys)}'"
             )
 
         # Ensure all keys are either required or optional keys if no extra field are allowed
-        if not self.allow_extra_keys:
+        if not self._allow_extra_keys:
             for object_key in self.keys:
-                if object_key not in self.allowed_keys:
+                if object_key not in self._allowed_keys:
                     error_msg = (
                         f"'{self.name}' contains the field '{object_key}' which is not allowed. "
-                        f"Allowed fields: {', '.join(self.allowed_keys)}"
+                        f"Allowed fields: {', '.join(self._allowed_keys)}"
                     )
                     raise ValidationException(error_msg)
 
     @property
-    def allowed_keys(self) -> List[str]:
+    def _allowed_keys(self) -> List[str]:
         """
         Returns
         -------
         Sorted list of required and optional keys
         """
-        return sorted(list(self.required_keys.union(self.optional_keys)))
+        return sorted(list(self._required_keys.union(self._optional_keys)))
diff --git a/ytdl_subscribe/validators/base/string_formatter_validator.py b/ytdl_subscribe/validators/base/string_formatter_validator.py
index d82bafa6..01283712 100644
--- a/ytdl_subscribe/validators/base/string_formatter_validator.py
+++ b/ytdl_subscribe/validators/base/string_formatter_validator.py
@@ -11,7 +11,7 @@ class StringFormatterValidator(StringValidator):
     Ensures user-created formatter strings are valid
     """
 
-    expected_value_type_name = "format string"
+    _expected_value_type_name = "format string"
 
     FIELDS_VALIDATOR = re.compile(r"{([a-z_]+?)}")
 
diff --git a/ytdl_subscribe/validators/base/string_select_validator.py b/ytdl_subscribe/validators/base/string_select_validator.py
index fae23e30..75346b8f 100644
--- a/ytdl_subscribe/validators/base/string_select_validator.py
+++ b/ytdl_subscribe/validators/base/string_select_validator.py
@@ -11,12 +11,12 @@ class StringSelectValidator(StringValidator):
     Ensures strings have selected one of the discrete allowed values.
     """
 
-    select_values: Set[str] = set()
+    _select_values: Set[str] = set()
 
     def __init__(self, name, value: str):
         super().__init__(name=name, value=value)
 
-        if self.value not in self.select_values:
+        if self.value not in self._select_values:
             raise self._validation_exception(
-                f"Must be one of the following values: {', '.join(self.select_values)}"
+                f"Must be one of the following values: {', '.join(self._select_values)}"
             )
diff --git a/ytdl_subscribe/validators/base/validators.py b/ytdl_subscribe/validators/base/validators.py
index 03ce8531..8ba80425 100644
--- a/ytdl_subscribe/validators/base/validators.py
+++ b/ytdl_subscribe/validators/base/validators.py
@@ -15,18 +15,18 @@ class Validator:
     """
 
     # If the value is not this expected type, error
-    expected_value_type: Type = object
+    _expected_value_type: Type = object
 
     # When raising an error, call the type this value instead of its python name
-    expected_value_type_name: Optional[str] = None
+    _expected_value_type_name: Optional[str] = None
 
     def __init__(self, name: str, value: Any):
         self.name = name
         self._value = value
 
-        if not isinstance(self._value, self.expected_value_type):
-            expected_value_type_name = self.expected_value_type_name or str(
-                self.expected_value_type
+        if not isinstance(self._value, self._expected_value_type):
+            expected_value_type_name = self._expected_value_type_name or str(
+                self._expected_value_type
             )
             raise self._validation_exception(
                 error_message=f"should be of type {expected_value_type_name}."
@@ -61,8 +61,8 @@ class BoolValidator(Validator):
     Validates boolean fields.
     """
 
-    expected_value_type: Type = bool
-    expected_value_type_name = "boolean"
+    _expected_value_type: Type = bool
+    _expected_value_type_name = "boolean"
 
     @property
     def value(self) -> bool:
@@ -79,8 +79,8 @@ class StringValidator(Validator):
     Validates string fields.
     """
 
-    expected_value_type: Type = str
-    expected_value_type_name = "string"
+    _expected_value_type: Type = str
+    _expected_value_type_name = "string"
 
     @property
     def value(self) -> str:
@@ -101,8 +101,8 @@ class DictValidator(Validator):
     a yaml.
     """
 
-    expected_value_type = dict
-    expected_value_type_name = "object"
+    _expected_value_type = dict
+    _expected_value_type_name = "object"
 
     @property
     def dict(self) -> dict:
diff --git a/ytdl_subscribe/validators/config/config_validator.py b/ytdl_subscribe/validators/config/config_validator.py
index 60da0bc4..d303d519 100644
--- a/ytdl_subscribe/validators/config/config_validator.py
+++ b/ytdl_subscribe/validators/config/config_validator.py
@@ -8,7 +8,7 @@ from ytdl_subscribe.validators.base.validators import StringValidator
 
 
 class ConfigValidator(StrictDictValidator):
-    required_keys = {"working_directory", "presets"}
+    _required_keys = {"working_directory", "presets"}
 
     def __init__(self, name: str, value: Any):
         super().__init__(name, value)
diff --git a/ytdl_subscribe/validators/config/metadata_options/id3_validator.py b/ytdl_subscribe/validators/config/metadata_options/id3_validator.py
index 300dd0ee..18d7c7df 100644
--- a/ytdl_subscribe/validators/config/metadata_options/id3_validator.py
+++ b/ytdl_subscribe/validators/config/metadata_options/id3_validator.py
@@ -7,12 +7,12 @@ from ytdl_subscribe.validators.base.validators import StringValidator
 
 
 class Id3VersionValidator(StringSelectValidator):
-    select_values = {"2.3", "2.4"}
+    _select_values = {"2.3", "2.4"}
 
 
 class Id3Validator(StrictDictValidator):
-    required_keys = {"id3_version", "tags"}
-    optional_keys = {"multi_value_separator"}
+    _required_keys = {"id3_version", "tags"}
+    _optional_keys = {"multi_value_separator"}
 
     def __init__(self, name, value):
         super().__init__(name, value)
diff --git a/ytdl_subscribe/validators/config/metadata_options/metadata_options_validator.py b/ytdl_subscribe/validators/config/metadata_options/metadata_options_validator.py
index b08eee39..e30ca06c 100644
--- a/ytdl_subscribe/validators/config/metadata_options/metadata_options_validator.py
+++ b/ytdl_subscribe/validators/config/metadata_options/metadata_options_validator.py
@@ -1,15 +1,10 @@
-from typing import Optional
-
 from ytdl_subscribe.validators.base.strict_dict_validator import StrictDictValidator
-from ytdl_subscribe.validators.base.string_formatter_validator import (
-    StringFormatterValidator,
-)
 from ytdl_subscribe.validators.config.metadata_options.id3_validator import Id3Validator
 from ytdl_subscribe.validators.config.metadata_options.nfo_validator import NFOValidator
 
 
 class MetadataOptionsValidator(StrictDictValidator):
-    optional_keys = {"id3", "nfo"}
+    _optional_keys = {"id3", "nfo"}
 
     def __init__(self, name, value):
         super().__init__(name, value)
diff --git a/ytdl_subscribe/validators/config/metadata_options/nfo_validator.py b/ytdl_subscribe/validators/config/metadata_options/nfo_validator.py
index a56c7d5f..93e4568b 100644
--- a/ytdl_subscribe/validators/config/metadata_options/nfo_validator.py
+++ b/ytdl_subscribe/validators/config/metadata_options/nfo_validator.py
@@ -5,12 +5,10 @@ from ytdl_subscribe.validators.base.string_formatter_validator import (
 from ytdl_subscribe.validators.base.string_formatter_validator import (
     StringFormatterValidator,
 )
-from ytdl_subscribe.validators.base.string_select_validator import StringSelectValidator
-from ytdl_subscribe.validators.base.validators import StringValidator
 
 
 class NFOValidator(StrictDictValidator):
-    required_keys = {"nfo_name", "nfo_root", "tags"}
+    _required_keys = {"nfo_name", "nfo_root", "tags"}
 
     def __init__(self, name, value):
         super().__init__(name, value)
diff --git a/ytdl_subscribe/validators/config/output_options/output_options_validator.py b/ytdl_subscribe/validators/config/output_options/output_options_validator.py
index 5d22da86..a188060c 100644
--- a/ytdl_subscribe/validators/config/output_options/output_options_validator.py
+++ b/ytdl_subscribe/validators/config/output_options/output_options_validator.py
@@ -8,12 +8,12 @@ from ytdl_subscribe.validators.base.string_select_validator import StringSelectV
 
 
 class ConvertThumbnailValidator(StringSelectValidator):
-    select_values = {"jpeg"}
+    _select_values = {"jpeg"}
 
 
 class OutputOptionsValidator(StrictDictValidator):
-    required_keys = {"output_directory", "file_name"}
-    optional_keys = {"convert_thumbnail", "thumbnail_name"}
+    _required_keys = {"output_directory", "file_name"}
+    _optional_keys = {"convert_thumbnail", "thumbnail_name"}
 
     def __init__(self, name, value):
         super().__init__(name, value)
diff --git a/ytdl_subscribe/validators/config/preset_validator.py b/ytdl_subscribe/validators/config/preset_validator.py
index d827519f..8805969b 100644
--- a/ytdl_subscribe/validators/config/preset_validator.py
+++ b/ytdl_subscribe/validators/config/preset_validator.py
@@ -47,22 +47,22 @@ class OverridesValidator(DictFormatterValidator):
 
 
 class PresetValidator(StrictDictValidator):
-    subscription_source_validator_mapping: Dict[str, Type[SourceValidator]] = {
+    _subscription_source_validator_mapping: Dict[str, Type[SourceValidator]] = {
         "soundcloud": SoundcloudSourceValidator,
         "youtube": YoutubeSourceValidator,
     }
 
-    required_keys = {"output_options"}
-    optional_keys = {
+    _required_keys = {"output_options"}
+    _optional_keys = {
         "metadata_options",
         "ytdl_options",
         "overrides",
-        *subscription_source_validator_mapping.keys(),
+        *_subscription_source_validator_mapping.keys(),
     }
 
     @property
     def available_sources(self) -> List[str]:
-        return sorted(list(self.subscription_source_validator_mapping.keys()))
+        return sorted(list(self._subscription_source_validator_mapping.keys()))
 
     def __validate_and_get_subscription_source(self) -> Tuple[str, SourceValidator]:
         subscription_source: Optional[SourceValidator] = None
@@ -75,10 +75,10 @@ class PresetValidator(StrictDictValidator):
                     f"{', '.join(self.available_sources)}"
                 )
 
-            if key in self.subscription_source_validator_mapping:
+            if key in self._subscription_source_validator_mapping:
                 subscription_source_name = key
                 subscription_source = self.validate_key(
-                    key=key, validator=self.subscription_source_validator_mapping[key]
+                    key=key, validator=self._subscription_source_validator_mapping[key]
                 )
 
         # If subscription source was not set, error
diff --git a/ytdl_subscribe/validators/config/sources/soundcloud_validators.py b/ytdl_subscribe/validators/config/sources/soundcloud_validators.py
index 97d71cf9..64e7c565 100644
--- a/ytdl_subscribe/validators/config/sources/soundcloud_validators.py
+++ b/ytdl_subscribe/validators/config/sources/soundcloud_validators.py
@@ -7,7 +7,7 @@ from ytdl_subscribe.validators.config.sources.source_validator import SourceVali
 
 
 class SoundcloudAlbumsAndSinglesDownloadValidator(DownloadStrategyValidator):
-    required_keys = {"username"}
+    _required_keys = {"username"}
 
     def __init__(self, name, value):
         super().__init__(name, value)
@@ -15,7 +15,7 @@ class SoundcloudAlbumsAndSinglesDownloadValidator(DownloadStrategyValidator):
 
 
 class SoundcloudSourceValidator(SourceValidator):
-    optional_keys = {"skip_premiere_tracks"}
+    _optional_keys = {"skip_premiere_tracks"}
 
     download_strategy_validator_mapping = {
         "albums_and_singles": SoundcloudAlbumsAndSinglesDownloadValidator
diff --git a/ytdl_subscribe/validators/config/sources/source_validator.py b/ytdl_subscribe/validators/config/sources/source_validator.py
index 609ab601..c13676a9 100644
--- a/ytdl_subscribe/validators/config/sources/source_validator.py
+++ b/ytdl_subscribe/validators/config/sources/source_validator.py
@@ -13,10 +13,10 @@ class DownloadStrategyValidator(StrictDictValidator):
 
 class SourceValidator(StrictDictValidator):
     # All media sources must define a download strategy
-    required_keys = {"download_strategy"}
+    _required_keys = {"download_strategy"}
 
     # Extra fields will be strict-validated using other StictDictValidators
-    allow_extra_keys = True
+    _allow_extra_keys = True
 
     download_strategy_validator_mapping: Dict[str, Type[DownloadStrategyValidator]] = {}
 
@@ -34,7 +34,7 @@ class SourceValidator(StrictDictValidator):
 
         # Remove all non-download strategy keys before passing the dict to the validator
         download_strategy_dict = copy.deepcopy(self.dict)
-        for key_to_delete in self.allowed_keys:
+        for key_to_delete in self._allowed_keys:
             del download_strategy_dict[key_to_delete]
 
         download_strategy_class = self.download_strategy_validator_mapping[
diff --git a/ytdl_subscribe/validators/config/sources/youtube_validators.py b/ytdl_subscribe/validators/config/sources/youtube_validators.py
index 53115bc3..1f5467ca 100644
--- a/ytdl_subscribe/validators/config/sources/youtube_validators.py
+++ b/ytdl_subscribe/validators/config/sources/youtube_validators.py
@@ -8,7 +8,7 @@ from ytdl_subscribe.validators.config.sources.source_validator import SourceVali
 
 
 class YoutubePlaylistDownloadValidator(DownloadStrategyValidator):
-    required_keys = {"playlist_id"}
+    _required_keys = {"playlist_id"}
 
     def __init__(self, name, value):
         super().__init__(name, value)
diff --git a/ytdl_subscribe/validators/config/subscription_validator.py b/ytdl_subscribe/validators/config/subscription_validator.py
index 46b09874..1347d6ba 100644
--- a/ytdl_subscribe/validators/config/subscription_validator.py
+++ b/ytdl_subscribe/validators/config/subscription_validator.py
@@ -27,8 +27,10 @@ class SubscriptionValidator(StrictDictValidator):
     A Subscription is a preset but overrides it with specific values
     """
 
-    required_keys = {"preset"}
-    optional_keys = PresetValidator.required_keys.union(PresetValidator.optional_keys)
+    _required_keys = {"preset"}
+    _optional_keys = PresetValidator._required_keys.union(
+        PresetValidator._optional_keys
+    )
 
     def __init__(self, config: ConfigValidator, name: str, value: Any):
         super().__init__(name, value)