This house was SUPER cool and we enjoyed our stay. It was clean, had two bathrooms, and could easily sleep 7 or 8 people if you have that many in your group. It also had a cute little balcony with a GREAT view of Tokyo Skytree.
I will say, like most places in Japan, the house didn't have central AC and it only had wall units in the two downstairs bedrooms. With those on, the downstairs living room/kitchen area was bearable but we pretty much couldn't even go upstairs.
I think it is also important to note, now that we know, it wouldve been useful to know ahead of time that the closest subway/train line to this house is NOT a JR line so you can't use your JR pass to get there and back. We used the local chou-sobu line for ~$3 a day. Another thing we wish we wouldve known ahead of time is that this is pretty far out of the main part of the city, taxis are SUPER expensive, and public transportation stops running around midnight in Tokyo. We had to spend around ~$60 to get home from Roppongi one night and ~$80 to get back from Shibuya.
This also seemed to be a very sleepy, quiet part of town. There are no bars and not many late night or early morning restaurants. We still really enjoyed the stay, just make sure you plan carefully and know what to expect. If not, then you'll learn a lot like we did but that's part of the fun.