The location can't be beat (unless you're ocean front). Everything is close by and easy walking distance. Beds are comfortable (1 twin bed is more comfortable than the other). Cold filtered water in the fridge.
If you plan on eating meals at the house, you may want to buy some plastic ware. I think I could only find 5 forks. There are 4 coffee mugs, so you may have to do some dishes. You probably want to ask how well stocked cooking supplies are. Other travelers left behind a bunch of spices and stuff for coffee.
You are at the beach and sand is hard to escape. Don't let that ruin your trip.