I stayed here for a month and a half while looking for a long-term apartment. I have no complaints. The room is quite small, but if -like me- you spend most of the day outside for work, tourism or whatever, it's not really a problem. The area is very quiet but very close to lively places like Akihabara and Asakusabashi.
The building itself is also very quiet and well-located, close to the stations of Asakusabashi, Akihabara, Suehirocho... where you can take some of the major lines (JR Yamanote, JR Sobu, Hibiya Line, Asakusa Line, Ginza Line). Plus, the Keihin-Tohoku Line that takes you directly to Yokohama. Also, it's at a reasonable walking distance from Ueno, Asakusa, Ryogoku (sumo area), Kanda, and Sumida River (its shore is quite nice to go for a run or even just a walk).
However, the biggest highlight is the communication with the host. Every time I messaged them I got a reply almost immediately. They are nice and helpful, and speak English perfectly, so don't worry if your Japanese isn't good enough.