Takeshi was very quick at responding. (We actually made our reservation just a day before) The building was under construction during our visit but everything on our floor was still very clean and the minimalist exterior was quite nice. The beds were comfortable and it was nice that we got to meet other tourists as there were 3 other beds in our same room.
We had actually booked the place for our last night in Tokyo and I think it worked well for us. It's a bit of a walk from the station but it's very easy to get to because you basically walk a straight line from the station.
I would recommend this place for those that are looking to meet other travelers (share stories and suggestions and things like that) Thank you for accommodating us on such short notice Takeshi! We had a pleasant stay.