We stayed at Ohkubo's place for two weeks. It was very clean and located close to Okubo and Shin Okubo Station, which made it very easy to travel all around Tokyo quickly and for very little money.
Ohkubo was a nice host who was very attentive and made sure eveything was to our satisfaction at all times. He even wrote a detailed house manual for us to make sure we reach the apartment without any problems.
The pocket wifi he provided was incredibly useful while exploring Tokyo und the battery lasted well beyond the expected time.
There are a lot of shops and restaurants in the immediate vicinity and the Korean district east of Shin Okubo is also worth checking out!
All in all it was a very pleasant stay at Ohkubo's place and we would recommend it to anyone who wants to find a great location from which you can quickly and easily explore the fantastic city of Tokyo.