That's great!
We (4 adults) stayed for 5 days.
1. Excellent location.
There are several subway lines within walking distance, from which you can get to all popular places in Tokyo. There are also small grocery stores, a barbershop and a great Mexican restaurant nearby.
2. The apartments are very comfortable, functional, spacious and with a cool design. Our room occupied an entire floor. There is a separate sleeping area with a bed, which is completely covered with screens (for 2 people). A separate area, which is also covered by a screen with 3 tatami mats. And a sofa that perfectly accommodates 1 adult. A large table. Excellent kitchen with all necessary accessories and a high-quality washing machine. There are cupboards where we were able to pack all our 4 large and 1 small suitcase.
PS To take the elevator to the desired floor, you need to attach the key to the reader. It took us a long time to figure out why the elevator wasn't going))))