Franziska was most welcoming. The place was as advertised, comfy and clean, and a very comfortable bed.
There was a communication problem as we moved out. I had been leaving the keys in the door when we were in the room, so that as we left we could grab them , lock the door as we left.
Upon moving out I left the keys in the door in the inside lock. I assumed that the owner would have another key to unlock and gain entry. Apparently, unlike locks in the USA the door cannot be opened from the outside with the keys in the lock on the inside. The printed house information says to leave the keys on the desk, which I never saw. Something so critical should be printed in 24 pica font on the front of the info stack, with an additional alert taped inside the front door.
Franziska threatened me with a 100 € charge if they needed a locksmith to open the door.
Fortunately her husband was able to open the door.
Communication is an ongoing problem between host and guest, and this is a good example of lack of proper notification of such a critical alert.
Hopefully the future guests will be alerted properly so that my mistake is not repeated.
All in all, the apt was great, and if Franziska would have us, we would revisit!