We will be as kind as possible in this review. Several things wrong, including a broken latch on sliding door, overhead light that kept flashing, no hairdryer (listed as an amenity). Check-in listed as 3:00 pm, and arrived shortly thereafter to find housekeeper just starting. 3:45 received email that our check-in was moved to 4:00 pm.
Casai was reasonably responsive, we got a hair dryer and the light fixed, but not the door.
As to the comfort and amenities of the apartment, the beds are great, but the furniture is very uncomfortable. A hard, saggy couch and two solid wood side chairs. At the dining table, you had the choice of a wooden bench or backless stools.
No house manual to explain how to get more supplies. 4 towels for 4 people for a week, so paid for a linen change; it took all day repeatedly emailing to prove we had paid that morning. Only a Nespresso for coffee, and they gave 4 pods. Nearest available 1.5 K away.
Upside, great location, and the doormen were wonderful.