1) Add some views of the outside, both from outside the house and from the windows inside the house
2) Add a few photos and artwork. Just a few that are to scale with the wall and add some color
3) Make sure your title has keywords that are likely to be searched
4) Beef up your description. Talk about the features of the house, distance to major attractions, from the point of view of the guest. I.e. don’t just list the features, but talk about them as if the guest is living them, e.g. for whatever you might have...“Relax in the tub after a day of sightseeing”, “Enjoy a good night’s sleep in luxurious, high-quality bedding”, etc.
You also might want to offer a “Grand Opening Discount”.