Running a vacation rental is a lot of work. Are you going to run down there every week to clean between visitors? Provide them with linens? Fix things on an emergency basis? Also, you need to figure in the cost of replacing things that are stolen, broken, or lost. We have a vacation rental I have enjoyed using over the last ten years, I wouldn't do it again. Every time I go down, I spend time and money replacing things. Last time, a chair cushion was missing (someone probably took it to the beach), blender gone, can opener gone, window blinds broken, bicycle wheel bent, etc. you can count on replacing bed pillows, blankets, every year, at least. We had a wedding party rent our place and the groomsmen smashed the built in microwave, busted a stair banister, and pretty much marked up every wall with dings and dirt marks. Thankfully, they paid for the damages and we had several days between visitors to fix everything.