We had a great time staying at Keiko`s apartment. The apartment is very clean and spacious, we stayed with 3 kids and there was plenty of room for everyone. Well equipped with detergent, soap, all home appliances and even snacks, coffee, tea. The location is really convenient, just a few steps from Hibiya line metro, many restaurants around, several 24h supermarkets, parks, cute local shops.
Hibiya line is a very well connected metro line, it was very easy to get around.
Keiko is such an attentive host, she helped us with anything we needed, and contributed greatly that we had such a good time in Japan.