When I joined steem I never thought that I would find info to help me with my rental! It's for sure a pleasant surprise. I am trying to follow the points that you described but to be honest, I never gave so much attention to those details.
Another useful advice that can be applied to rentals is to story tell about your rental. Give details and make a story about the place that you are offering to people, make it personal and make them want to come and stay there. I didn't apply this advice yet but I want to do it in the future as I saw other rental owners do it with a lot of success.
Keep posting and be positive, our property will be rented! =p