We've built this over the summer and launched it four weeks ago. We currently have around 150 listings and a couple hundred of users. We charge a small booking fee to bootstrap this (less than half of what Airbnb takes). The fees fall to zero if a user books or hosts a couple of times and/or gets positive reviews. Would love to get some feedback or have you as guests or hosts. If you're already hosting on some other site, just pm me the link and we'll set up the listing for you