Apartment is very clean, in a very central location (a station away from Shinjuku), plenty of restaurants nearby. Michi always answer emails and queries so kudos for the good communication. Check in instructions were very detailed and easy to follow. There's a washer in the unit that helped us a lot doing our laundry. Plates, pan and pots, and glasses not enough to cater our needs.
Big disappointment on the size of the apartment, there were 5 people in our group and it was really tight. Michi's place is good for 3 people. Maybe 4 max if the 4th one is a small child. Toilet size is also a big disappointment. It is like the size of an airplane's toilet with the addition of a very tiny tub for shower. If you're tall, your knees will hit the wall. And it's lacking space to hang your towel and clothes.
Other than that, our stay with Michi went smoothly. I will definitely recommend to a group of 3 but definitely not a good place for a party of 5.