Great experience! Kei san is so considerate that everything is prepared perfectly -- we even find nail clippers. The house is very clean and tidy: bedroom is larger than we thought and totally enough for 2/3 people; kitchen is very useful and comfortable to stay in; shower and toilet are functioning well, too. Around this place are tasty small restaurants and nice neighbors. Subway station is within 10 min's walk and it's near Skytree, Ueno and Sanjo, so arrange your schedule wisely. Furthermore, Kei san advised us to the DAISO( everything here only cost 100 yen) near the station, you can check it out too.
Anyway, highly recommend this place and if I have chance I'd like to stay here again.