Pros:
1. Very well appointed and spacious apartment.
2. Location cannot be beat - right next to the Vatican wall; about 15-minute walk from the Vatican Museum entrance.
Cons:
1. Room was supposed to be ready by 3 pm (when check-in is allowed). We were there at 5 pm. Cleaning was just starting out. The property manager suggested that we wait (for several hours!) in the building hallway. We ultimately negotiated that we'll move from room to room while they are cleaning it.
2. When you check in, they bring you wet towels and you're expected to wait for the next morning for them to dry.
Other:
1. There is an elevator in the building, but you do have to walk 1 flight of stairs to get to the apartment. Was not an issue for us, but could be for some people.
2. You are given two sets of two keys: one for the apartment, one for the building entrance. When you check out, you're supposed to leave all keys inside the apartment. That means there is no way for you to leave the building - you need a key to open the door from inside as well. So one person has to keep the building entrance door open while someone else is leaving the keys in the apartment.