The self check in was not working at all. The first code didn't work so we were trying to contact them via email, WhatsApp, phone and airbnb website. We were ignored and it took us 3 trials to receive a code which worked finally.
We booked the apartment with 2 bedrooms but some days before arrival we were offered the smaller apartment for the same price due to some structural problems.
The apartment itself is well located and comfy.