A nice appartment. I recommend a more personalised listing by giving it a nice name in a title, writing a short welcoming info description (how the guests will feel there). Post less photos, max 20 and more professional ones, less pics with the whole town, more about appartment from different angles. Give it more flexible check-in hours (longer time), use diffent pricing policy (also non-refundable option with some discounts). Have pricing similar to others (if it's a way cheaper than average you get strange guests or either they think it is something wrong with apt). Use tags at the photos. Go throughout listed amneties if you could specify any extras. Can you offer an extra bed for one kid (then you attract also families). Take a look at other listing in surrounding how they described and tagged, give names in title and about their amneties. Adjust it accordingly. You can also offer special discounts if nothing else works. Hope this helps. Kind regards, Miha