The check-in process is more complex than usual as you have to complete extra information at the co-host's website prior to getting there. The automated messages through airbnb and whatsapp are constant and long. There are no hosts receiving you, so the instructions to enter the room (3 doors with pin pads to get there) might be confusing for some. Only one key provided for two guests.
In addition, the shower didn't have one of the sliding doors needed to close it (it's a small shower with two doors, which need closing to avoid getting the floor wet), and I didn't have wifi during most of my stay.