I've just got back from a 2 week stay in Mr. Lemon & Mama-san's house in Fudo-mae and had a great time. Super friendly Japanese people! Their house is straight forward to find and only a 10 minute walk from Fudo-mae station, which is well placed to getting around the rest of Tokyo using the hyper-efficient public transport system.
The large bedroom is on the third floor with a balcony so you can dry your laundry or just stand and watch the locals go about their day. The large bathroom is on the ground floor with an additional lavatory on the second floor. The shower is powerful and always plenty of hot water.
I really enjoyed my stay here and highly recommend it!