Overall, it was a stressful stay.
Tiny studio, just about 15-20sqm (it's OK for 2, but very tight for 4). Ground floor, the only window faces inner yard, so not much light even during the day. A bit complicated check in/out (key needs to be picked up/dropped off at another location, not very close to the apartment).
But the most disappointing were 2 other things: 1 - water boiler was not plugged in for us, we had to take cold shower because we arrived late in the night. 2 - the host knew about the water leak from the ceiling, but nevertheless scheduled plumber visit to investigate, even during guest stay. So after the late arrival and cold shower, the next morning, we woke up because of water dripping from the lamp socket in the ceiling.
The hosting company wasn't really admitting their mistakes, and I had to resolve it via airbnb. We moved to a hotel and got a refund of unused night, but this major disruption practically ruined our short 2 night stay in Paris.