The key holder, i.e. the restaurant, was on vacation. A cell phone number at the front door should make contact for the key handover. The only catch is: In Lubmin there is almost no network connection possible! Luckily, the key holder turned up without calling.–––The window panes in the apartment were in a pitiful condition. Excuse me?? The key holder offered to do the cleaning herself, but who wants to have the apartment cleaned after you've moved in! We then cleaned some of the windows ourselves.––We have often been to the blue shell in Lubmin and have always been satisfied.