My wife & I stayed here for over a month and everything was perfect.
Spacious apartment, easy to get in and out (keyless), heating worked well for winter, bathroom is great with high water pressure in the shower and the bed very comfortable.
The location of the apartment is very quiet which was nice, but there's a few 24hr convenience stores around, some restaurants and a handy supermarket across the road near the hotel. It's 10 min walk to the Akasaka shopping district and there's hundreds of places to eat.
There seems to be a subway nearby but we used UBER for the entire stay which worked well.
We would definitely stay again.