I'll start with the fact that since this is a hotel, there is staff to help out and they were friendly and helpful. We asked for extra pillows since the room only came with one per person. Then we had to ask for towels twice over the course of our stay since the cleaning staff kept forgetting them. Lastly, we asked to print our COVID test results since the airline requested printed copies. They were accommodating to all of our requests.
As for the room, it was adequately sized for 1 person, but with 2 people it gets crammed. We hardly had any space to unpack our bags. There was no fridge to put any food or drinks into. The building uses central AC, which was set to heat when we were there, but the room was already fairly warm so we had to open the window, which was courtyard facing. Luckily, it was pretty quiet, but there was no real breeze for air flow. The shower was tiny, although it was tall, but would never stay a consistent temperature.
The location isn't really that convenient to anything other than the Luxemburg park.
Lastly, hopefully this isn’t a common occurrence, but one night we were woken up at 3am by the fire alarm, which ended up going off about 5 minutes later - after we were fully dressed and ready to go downstairs.
Oh, and others mentioned that you can hear the subway, which is true even on the 4th floor, but it didn’t really bother us.