We stayed here for a month. The location is perfect. Right after you exit the building, you enter the street full of small shops and restaurants, all with famous Daikanyama vibes.
Very close to 2 JU stations (Ebisu, Shibuya). 25 min on foot to the Shibuya city ward.
The apartment itself is compact; if you are not accustomed to Japanese flats, you'd be surprised. However, the apartment is one of the biggest in this mansion (if not the biggest one). Speaking of space, we never used the balcony — due to sun/ rain as it has no roof.
Overall, It is a good place to start your Japanese journey.