The apartment is spacious, with a separate bedroom. It is well equipped. The building itself could use some renovation, but it is very well located, between Minowa and Iriya stations. From there, you can easily go anywhere in Tokyo. The neighborhood is quiet with a lot of shops and cafés nearby.
We did not meet the host in person, but he has always answered your emails promptly (within the hour). He has been very helpful during our two-months stay in Tokyo.