Hisao was very nice. He was teaching a class when we arrived and let us observe and take some pictures. The space was very accommodating and he had provided a different egg sandwich for us each morning. The location was off of the Nippori train stop (Yamanote line) and it was very convenient to get to the other popular neighborhoods as they all used that line as well (Ginza, Harashuku, Shinjuku, etc). The home was about a 15 min walk from the train station though, so it may be good to get a taxi if you have a lot of luggage. The house was also just a few miles from the Sensoji Temple and a couple blocks from a 7 eleven that had an atm.
Prior to the classes starting, some of the individuals taking the class would use the common spaces on our level to change or take a shower. This was a little bit of a surprise but everyone was very nice. We were provided locks for our rooms and access to a small safe. The space was clean and the beds were comfortable. After 8pm, the neighborhood is pretty quiet but never felt unsafe.
Hisao kindly dropped us off at the Ueno train stop so we could activate our JR rail pass tickets before heading to Nagano. Would definitely recommend staying here.