Our experience with mr. Ohkubo accommodation was very nice. The apartment is small (as almost 100% in Tokyo), but cozy and very clean. Mr Ohkubo is very gentle and attentious. The instructions manual is very complete, you should have no problems. Foreigners just have to take care with korean stores (no very welcoming about foreigners). Very close to the trains station e a lot of delis nearby. We enjoyed a lot!