We had a very nice stay at Keiko her appartment. She came to pick us up at the metro station eventhough we could not give her our exact time of arrival beforehand. She had drinks, sweets, icecream for us. She also looked up the information for our early train to Narita Airport.
The appartment is comfortable, spatious, clean and, eventhough not in the real center of Tokyo, very well located: de metrostation is very close and the metroline connects to several interesting locations. Good location also for arrival or just before leaving via the airport. Our conclusion: Highly recommended. One remark: the futons are very thin and thus for those who are used to sleeping in a soft bed might be too hard.