I will descrive my experience and let the community know what happened to me.
I recommend that all of you stay away from the this apartment and this host.
We were very honest and told the host (via airbnb - I think you can check all the email we had via airbnb) that opening the bed, the corner a bit broke and now he is asking us € 650 to buy a new bed? I believe a Host is aware of what are the normal risks of renting a flat and effect of time. I don't want to pay the effect of time and the bad quality of the bed. It could have happened to everyone. We only opened the bed that we didn’t choose to put back things that the Host told us to use such us clothes horseand vacuum cleaner. If we were not neat, all this would happen to somebodyelse.
The damage is not caused by our carelessness. It's was not our fault and we couldn't have avoided it. In addition the host could easily fix it.
In addition the bed still opens and still support the mattress. The horizontal and vertical axis are joined by three supports and two of these have broken. I saw the picture of the host and he dropped the axes. Does he really need to change the bed, can't he fix it?
The bed is made of particleboard that is not a good material to support the heavy structure of a bed with storage.
The host was not as correct as we were. I sent him a message asking to come to the flat (via airbnb) and have a look but he sent another man that said that everything was fine and we didn't have to pay additional money (no proof because it was not written).
In addition the host told me that there was the lift but he mitted to tell me that it is very small and he knew I needed an Elevetor for 2 strollers.