Not good at all, didn’t get to stay here so I can’t comment on cleanliness etc but to use an app as a key to get into your apartment, without a backup plan is the worst idea I’ve ever heard of. We got here to get ready to go to a concert and couldn’t get into our room as on the app the key said offline. Now we know it was a fault with the WiFi so the lock on the door wasn’t connected to wife, hence we couldn’t enter our room. After calling and messaging the host several times, leaving voicemails etc, for 2 hours, we had to book another hotel 40 minute drive away that cost us a fortune and also made us late to the concert, I must add the hosts were on holiday and there was another woman looking after it for them but we were never given any other number so couldn’t get in.
It is in a really nice area and should the host send you a backup to get into the room ie the key safe number just in case I think this problem would be averted in future.
We were really looking forward to staying here but sadly didn’t