As I think this is important to potential guests I'd like to leave a few lines here:
1. The host was communicative at first and allowed making a change to the booking, which was appreciated.
2. Unfortunately, the apt. did not look as depicted in the photos on Airbnb: There were no curtains/mount for this one-room (bedroom) apartment, which has a big window facing multiple other apt. windows into a backyard; thus no privacy. After informing the host with a picture, I was advised to use outside shutters, which however meant staying in the dark (during the day) or at the light of a single small lamp, since -opposed to the Airbnb pictures- there were lamps missing.
3. Most disturbingly, the apt. was dirty and had not been cleaned before arrival: there was a large ball of hair in the shower, the toilet was dirty, the bed pillows were yellow, etc. Besides being charged a fee for a non-existent cleaning service and having to stay in a dirty apt, during a pandemic this might pose health risks! At some point a cleaning person showed, up; however, this was several hours after check-in, which is not acceptable. After informing the host about the issues and sending pictures for proof, the host stopped responding.
4. The shower is broken: the shower head squirts out at a 90 degree angle and the shower cabin has a big gap between doors, causing water to leak out onto the bathroom floor, creating a mess to be cleaned after every shower.
I would personally not use this Airbnb again. I'm alright with staying in small one-room apts., pictures taken with fish-eye lenses and all (it's not the first time I'm using Airbnb and it's Paris!). This one had no hand soap in the bathroom, TV didn't work (or no instructions on how to use) and the bed was half lumpy, half hard. However, having to stay in a dark and dirty apt. lacking hygiene with no mitigations or apologies from the host is not something I would want to get myself into again.