I had a realy nice month at the accommodation in setagaya. It's really convenient location, with lot of convenient stores around and also big supermarkets. The 10 minute walk to the station can be a little annoying, especially if it's really hot, like in August.
The room was really well equipped, with a washing machine, which can really save your life by temperatures over 36 degrees.
Super easy check-in and out makes it easy to plan your arrival in Tokyo.