Everything was great and Frank has been at the same time discrete and always available. For future guests: I've sometimes seen commentaries on other hosts' profiles of people complaining about not being able to close their room's door when out which is the case at Frank's (room can only be closed from the inside) but that's not an issue at all: in Copenhagen people leave their unlocked helmets with their bicycles, people go on and off of public transportation without check/need to obliterate a ticket, etc. so don't worry.