Hi Nick, thanks for your review. I am sorry to hear about the difficulties your mother and sister had finding the lockbox late at night. This is the very first time we hear this feedback and it has never been an issue for our many previous guests, but we'll make sure to improve the system. However I have to say I am very surprised to read the comments about cleanliness of our apartment. All linen and towels are professionally cleaned and folded, and we put them in place before your mother and sister's arrival. Concerning the shower curtains, I'm afraid they have misinterpreted small limestone traces for mildew. The curtains are one month old.
I am usually open to letting trustworthy airbnb guests book on behalf of close relatives (who obviously have not used airbnb before), but it seems in this case the risk was not worth taking as communication did not go well and expectations were not set right.
I would have loved to get a message from you during your stay (maybe on the first day?) so I could send my cleaner to the house asap if deemed necessary. I hope this will be useful feedback for the next time you use your profile to book on behalf of someone.