(The original Haven Bag is an interior of a leather bag but I chose the Dwemer version so home does not feel too crammed and cluttered.) I am able to bring Meeko here and hence this is my main portable home.
Dwemer architecture does make it feel more like a museum and lacks the coziness of the Staff of Shalidor but the spaciousness is calming after combat in dreary dungeons and caves. It enters a magical plane if you must know. My husband was quite catty- 'What- your staff just hangs out rigid while you disappear'.
Also you can hear the rain and weather from your last location giving you a lovely immersive connection the the outside.
This mod really helped ease the dreariness of Alfthand during the long slog to Blackreach.