The theme can work for a single property. You can disable submit for other people and manage this property with an user of your own. We have here another client doing the same – http://carib.comtoday.fr/
Steps to get you started:
1. You install a demo – http://help.wprentals.org/article/demo-setup-with-1-click-demo-import/
2. You delete all demo properties – owners – blog posts from admin (but this way you keep the pages and theme options and save time).
3. You go and register your own account (use front end – register (on meniu)
4. You add your property with that account
5. You go here and add your username –
Now you may wish to: