Masa's place was a beautiful space. The pictures are as advertised, there is plenty of room in the closet, the bath is nice, wifi is unlimited and fast, and the building is very nice. It is located in a great area with a lot to do and a 2 metro stations no more than 2 minutes walk. There are also three grocery stores within a 3 minute walk from the building.
The only unfortunate thing is that the kitchen wasn't stocked for cooking. It was a beautiful kitchen but realized the first morning I was there that there were no bowls. Kakeru (Masa's co-host) responded quickly to my message and brought bowls over the next day but I also had to buy oils, salt and pepper, and other basics in order to make my meals at the house. I imagine this will get rectified as I had nothing but positive experiences communicating with the hosts and they were very flexible to make the stay comfortable.
I would definitely recommend staying here!