Very cute little flat tucked away in a residential area just 5-10 min walk from the bustling restaurants and shopping alleys of Nakano. Nakano station is 10 min away and from here you can get to most of Tokyo extremely easily.
The flat was spotless and I found various useful items around in places just where I needed them. It is not very big but is cleverly arranged and perfect for 1 person. It should be fine for 2 people, depending on what you're used to.
The loft bed was quite comfortable. The balcony was nice to have, though bear in mind the house is close to the railway so you will hear the trains - but they do stop running at night. The only thing I found inconvenient was the lack of dedicated bathroom sink. I had to wash my face etc. at the kitchen sink, and there is not a huge amount of space to store toiletries. Not a dealbreaker for me though, and I would come back again.