Tatsunari is a fantastic host who is around everyday and replies to messages very quickly. The apartment is in a great neighborhood Shirokane Takanawa and Azabujuban, and also near Keio University where there are many nice cafes and restaurants.
I stayed here for a month and felt quite at home. Although I was quite lucky to have very pleasant flatmates too (it’s an apartment with 4 rooms, 2 shared bathrooms and a shared kitchen). There’s a washing machine so it’s easy to do laundry everyday and do the drying on rooftop.
There’s a bus stop right in front of the apartment which allows easy transport to Roppongi or Shinagawa. Recommended!