As soon as we checked in, we noticed that the apartment smelled like sewage. I poured bleach in the drains but the smell came back; the host recommended to open all faucets for 20 secs. Again the smell returned later. I was told to open the windows (!), but there are construction works in the building and dust is everywhere as soon as you open the windows. So my choice was: breathe smelly air from the toilet; inhale vapor of bleach; keep the windows open and let dust in.
The host offered to send a cleaning guy, but the dust would return the next minute.
On top of the smell and the dust: there’s noise from the construction works in the building and from underground trains (the flat is at ground floor); sofa bed in the living room is worn out and spreads pieces all over the room.
The host offered a small compensation, which I refused. A small reimbursement has been recognized by Airbnb.
In conclusion: I’ve selected a “superhost”, paid more that 250€/day to have my holidays spoilt.