My three other friends and I really enjoyed staying at Emi and Tuhin's place. It's situated in a really convenient spot, just a few minutes from the Koenji JR station. This also means that you can kind of hear the train most of the time, though not super loudly, and it stops at midnight. The amenities all match what is listed on the site. There were 3 rooms (anime themed!), which each fit 2 people; our group of 4 had no problem fitting. The whole place was very clean and well-furnished as well. If I were to go back with a group this size, I'd definitely consider staying at Emi and Tuhin's place again!