Overall: great stay and can highly recommend!
Best points: very quick and smooth contact with the host, location, cleaniness, all amenities imaginable and some very nice extra features (jacuzzi!, nice beer glasses, umbrellas etc.).
Not so great, but expected: apartment is on the ground floor, so does not have much daylight (however, I did stay there during the "dark season"), paved roads of the Old Town + ground floor = noise from the cars passing by.