diff --git a/homeassistant/components/notion/__init__.py b/homeassistant/components/notion/__init__.py
index d06827ffd7d..4aa8447eb9a 100644
--- a/homeassistant/components/notion/__init__.py
+++ b/homeassistant/components/notion/__init__.py
@@ -9,7 +9,7 @@ from aionotion import async_get_client
 from aionotion.errors import InvalidCredentialsError, NotionError
 
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import ATTR_ATTRIBUTION, CONF_PASSWORD, CONF_USERNAME
+from homeassistant.const import CONF_PASSWORD, CONF_USERNAME
 from homeassistant.core import HomeAssistant, callback
 from homeassistant.exceptions import ConfigEntryAuthFailed, ConfigEntryNotReady
 from homeassistant.helpers import (
@@ -24,7 +24,7 @@ from homeassistant.helpers.update_coordinator import (
     UpdateFailed,
 )
 
-from .const import DATA_COORDINATOR, DOMAIN, LOGGER
+from .const import DOMAIN, LOGGER
 
 PLATFORMS = ["binary_sensor", "sensor"]
 
@@ -39,9 +39,6 @@ CONFIG_SCHEMA = cv.deprecated(DOMAIN)
 
 async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
     """Set up Notion as a config entry."""
-    hass.data.setdefault(DOMAIN, {})
-    hass.data[DOMAIN][entry.entry_id] = {}
-
     if not entry.unique_id:
         hass.config_entries.async_update_entry(
             entry, unique_id=entry.data[CONF_USERNAME]
@@ -99,7 +96,8 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
     )
 
     await coordinator.async_config_entry_first_refresh()
-    hass.data[DOMAIN][entry.entry_id][DATA_COORDINATOR] = coordinator
+    hass.data.setdefault(DOMAIN, {})
+    hass.data[DOMAIN][entry.entry_id] = coordinator
 
     hass.config_entries.async_setup_platforms(entry, PLATFORMS)
 
@@ -157,7 +155,7 @@ class NotionEntity(CoordinatorEntity):
             via_device=(DOMAIN, bridge.get("hardware_id")),
         )
 
-        self._attr_extra_state_attributes = {ATTR_ATTRIBUTION: DEFAULT_ATTRIBUTION}
+        self._attr_extra_state_attributes = {}
         self._attr_name = f'{sensor["name"]}: {description.name}'
         self._attr_unique_id = (
             f'{sensor_id}_{coordinator.data["tasks"][task_id]["task_type"]}'
diff --git a/homeassistant/components/notion/binary_sensor.py b/homeassistant/components/notion/binary_sensor.py
index ab3d0775436..42e32b1e19c 100644
--- a/homeassistant/components/notion/binary_sensor.py
+++ b/homeassistant/components/notion/binary_sensor.py
@@ -22,7 +22,6 @@ from homeassistant.helpers.entity_platform import AddEntitiesCallback
 
 from . import NotionEntity
 from .const import (
-    DATA_COORDINATOR,
     DOMAIN,
     LOGGER,
     SENSOR_BATTERY,
@@ -122,7 +121,7 @@ async def async_setup_entry(
     hass: HomeAssistant, entry: ConfigEntry, async_add_entities: AddEntitiesCallback
 ) -> None:
     """Set up Notion sensors based on a config entry."""
-    coordinator = hass.data[DOMAIN][entry.entry_id][DATA_COORDINATOR]
+    coordinator = hass.data[DOMAIN][entry.entry_id]
 
     async_add_entities(
         [
diff --git a/homeassistant/components/notion/config_flow.py b/homeassistant/components/notion/config_flow.py
index 84fe69eb61a..cdaab389dc7 100644
--- a/homeassistant/components/notion/config_flow.py
+++ b/homeassistant/components/notion/config_flow.py
@@ -44,23 +44,22 @@ class NotionFlowHandler(config_entries.ConfigFlow, domain=DOMAIN):
             assert self._username
             assert self._password
 
+        errors = {}
         session = aiohttp_client.async_get_clientsession(self.hass)
 
         try:
             await async_get_client(self._username, self._password, session=session)
         except InvalidCredentialsError:
-            return self.async_show_form(
-                step_id=step_id,
-                data_schema=schema,
-                errors={"base": "invalid_auth"},
-                description_placeholders={CONF_USERNAME: self._username},
-            )
+            errors["base"] = "invalid_auth"
         except NotionError as err:
             LOGGER.error("Unknown Notion error: %s", err)
+            errors["base"] = "unknown"
+
+        if errors:
             return self.async_show_form(
                 step_id=step_id,
                 data_schema=schema,
-                errors={"base": "unknown"},
+                errors=errors,
                 description_placeholders={CONF_USERNAME: self._username},
             )
 
diff --git a/homeassistant/components/notion/const.py b/homeassistant/components/notion/const.py
index 5541cfedc70..339d3020734 100644
--- a/homeassistant/components/notion/const.py
+++ b/homeassistant/components/notion/const.py
@@ -4,8 +4,6 @@ import logging
 DOMAIN = "notion"
 LOGGER = logging.getLogger(__package__)
 
-DATA_COORDINATOR = "coordinator"
-
 SENSOR_BATTERY = "low_battery"
 SENSOR_DOOR = "door"
 SENSOR_GARAGE_DOOR = "garage_door"
diff --git a/homeassistant/components/notion/sensor.py b/homeassistant/components/notion/sensor.py
index efb33944990..2e7260080bb 100644
--- a/homeassistant/components/notion/sensor.py
+++ b/homeassistant/components/notion/sensor.py
@@ -10,7 +10,7 @@ from homeassistant.core import HomeAssistant, callback
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
 
 from . import NotionEntity
-from .const import DATA_COORDINATOR, DOMAIN, LOGGER, SENSOR_TEMPERATURE
+from .const import DOMAIN, LOGGER, SENSOR_TEMPERATURE
 
 SENSOR_DESCRIPTIONS = (
     SensorEntityDescription(
@@ -27,7 +27,7 @@ async def async_setup_entry(
     hass: HomeAssistant, entry: ConfigEntry, async_add_entities: AddEntitiesCallback
 ) -> None:
     """Set up Notion sensors based on a config entry."""
-    coordinator = hass.data[DOMAIN][entry.entry_id][DATA_COORDINATOR]
+    coordinator = hass.data[DOMAIN][entry.entry_id]
 
     async_add_entities(
         [