I had such a pleasant time at Keita's house! The house is pretty much as described - older house but charming. It is quite a while away from Tokyo downtown but I actually enjoyed that. Coming back to the quaint neighborhood after a day in the hectic city was very pleasant and I enjoyed experiencing this tourist-free side to Tokyo. I recommend visiting the temple in Takahatafudo, too!
Apart from that, the house has the basic things you might need and Keita is very laid-back and helpful. Room 1 had a very pretty view of Minamidaira.