Ken's place is very cozy and relaxing. We love the balcony and the arrangement of the house. The kitchen is well equipped and the bed is very comfortable.
Ken responds very quickly and we had no problem communicating with him. Check in was on time and very smooth.
His apartment is located near a seibu shinjuku line and it is very easy to find. What we love most about his flat is his vicinity to Nakano. Its just 1 station away from his apartment.
One minor issue that we had was the portable wifi. The previous visitor used up all the available data and we were left with a slow wifi connection. Ken did let us know about this problem and it is okay as we have bought our own internet sim card just in case.
Overall, his apartment is highly recommended and we will definitely consider his apartment when we go back to Tokyo.