The house was fun to stay in for the experience of a very narrow house. The place was very close to Ueno-station and surprisingly quiet. Very positiv!
For 5 people it was a bit small. There is no table or enough chairs to eat together. For our 2 days trip to Tokyo it was ok.
It was a bit dirty in the corner of the rooms.
The check-in with the passport data was a bit confusing.
The check-in guide was very informativ and helpful.
All in All we liked the house because it was so small and a fun experience. But I wouldn't recommend to stay there to long with a hugh group of people.