I stayed with Wakana for 3 weeks in June whilst attending Japanese school here. The location was perfect as the house was super close to both train and bus services to Shibuya Station. Eventhough it was really hot in Japan, the room had its own AC unit so it was never hot once inside. Wakana also gave me bottles of water to take to school everyday. :) Another plus staying here was the proximity to Shimokitazawa. Eventhough Ikenoue (where the house is located) is one station away, on foot it only takes about 10 minutes and you're in the middle of cheap food, great vintage shops and other interesting finds. Wakana was so accommodating it made my stay very comfortable. Highly recommend staying with her if you have the opportunity.