Hirotaka's rooms are in a small apartment building in Shibuya. The place itself is very nice, two single beds that are not the most comfortable in the world but didn't have issues sleeping. The shower and bathroom both are in excellent working order and there is enough space to spread out in. You won't want to be staying in much in Tokyo anyway but it isn't the type of place where you would find much value in doing that.
Getting in to the rental is quite easy and it is nice to have the security codes to be able to come and go as we please without having to remember a key. The pocket wifi is another nice aspect of staying with Hirotaka, as we were able to bring it around and it had pretty good battery and definitely helped us navigate Tokyo (bring a USB-C charger if you are planning to be out long days and a portable battery).
Hirotaka took us to his office on our second day and laid out some things to do in the area, some we had seen before and some we had not. These can be nice additions to your stay if you don't have much planned or it can be a nuisance that there is no option in receiving these recommendations.
Overall, the stay was very good and Hirotaka is a good host. There were a couple of minor issues but the location is great and overall it is a good value for a stay in a great neighborhood in Tokyo!