We had a group of 6 and everything was amazing. To begin with, the host is very helpful and accommodating. They were in contact with us from when we began planning our trip to our plane ride home. Their English is very good, and it is very helpful to have hosts like them. If it is your first time to Tokyo, I would recommend this even further.
The locale of the house is very nice, just several minutes from Shibuya. The surrounding area was very pretty and scenic and it was not hard to find the house. The locals around us were very helpful and kind also. It is a very nice place to spend time.
The house in and of itself is beautiful and it was very clean when we arrived. The guest book near the door is a nice touch. We spent a lot of time in the common area with the kitchen. It was incredibly home-y. I enjoyed having a balcony and a deck outside too. There are plenty of glasses, utensils, appliances, etc. etc. and plenty of space in the fridge to store food.
It is also very cost effective. We fit 6 people in very cozily, and it was very cheap for us. A lot of bang for the buck.
If you are looking to feel like you are truly living in Tokyo, this is the place. Sightseeing is also convenient from here. Everyone in our group of 6 adored it. We would definitely stay here again, and I think others should also. Overall a very positive experience!