The house we stayed in was in an excellent location. Very close to central areas like shibuya and shinjuku. The closest stop to the house was on a well connected line and within 2 minute metro journey from those areas, as well as on a direct line to Tokyo station (where all shinkansen and intercity trains tend to leave from).
The house is small but clean and relatively cosy. I would recommend it if you do not mind everyone practically being together in one room, very little privacy, but the shower room does have space to change clothes and stuff.
The only separation is between the top floor and the middle floor. I slept for 9 nights on the top floor where there are 3 futons for 3 people to sleep on. They were remarkably comfortable and if you are staying with friends, it feels like a sleep-over.
I must highlight the fact that the ladder/staircase to the top, is incredibly steep and you must be very careful going down it especially with socks on. While this never developed into an actual problem, it is something to bare in mind.
The two toilets are separate from the shower room and all work well.
This house is great for big groups of friends, I had a wonderful time here and the Host was always willing to answer questions, and has an excellent information pack available once you are confirmed to be staying there. I would have liked to meet them in person but this would be my only improvement on the host.
All of this for the relatively good price means I must give this place 5 stars.