Please note that not every neighbor is happy about the New Sharing Economy. If we want them to understand the 21st century :-)) we should respect normal house rules like.... no party after 10pm, be quiet in the staircase/hallway, late check-in fee after 7pm, don't ring at neighbours bell because you cannot find the key in your handbag, don't throw things out of the window, eg. Just use your common sense.
Although the apartment is on a very high standard and equipped like a serviced apartment - I am still a private host but not a Hotel with fully employed staff and a front desk.
Me and my team are always happy to assist - but it can take time to follow your not urgent request (like 1 more towel).