Seven adults stayed for 6 nights at beginning of March 2018. The apartment is in a good location right in Zermatt, walking distance to the main street. The buses to the ski lifts (Matterhorn and Sunnegga) were also a close walk. There's a market, bakery, restaurants, and bars nearby. The apartment had 2 small bathrooms - both with showers.
Our biggest complain was the towels provided - they were extremely scratchy and smelled like it wasn't dried properly.
All three rooms were not spacious but one room was especially small that you have to push the beds all the way in to open the door. The beds were a little on the soft side and not large.
The sofa bed in the living was okay. There were two quality sofas in the living room, including the sofa bed so we had plenty of seats to hangout. The dinning table easily fits 6 adults but we didn't really use it as we always ate out.
The owner is very responsive when contacted through VRBO and when we requested a second set of keys, he provided it.
There is also a ski room you can use although it's shared by the apartment building.