The check in process is thru the app, they give you access a couple of hours before and if you don’t have wifi it is hard to have the online key. Customer service works well over the phone.
The apartment is functional but very cold, not cozy at all. Sofa bed was dirty but when we called to have it cleaned and extra sheets delivered they arrived the same day. All units in the building seems to belong to the rental company. Kitchen was fully equipped. They gave us a 20 Euro charge “occupation fee” for no reason.