We were very satisfied with our stay. The apartment is centrally located in Asakusa within walking distance of everything. Also within a short walking distance to trains (under 10 minute walk).
The apartment is very clean and the beds, although on the floor, Japanese-style, were very comfortable. It's like a traditional Japanese ryokan with a shared kitchen in the building but you have your own private room with bathroom.
Yoshimoto was also very easy to communicate with and helpful.
I would recommend anyone that wants to explore this district of Tokyo to stay here - it felt like our own home for a couple of days.