Some of it depends on what kind of listing and how you run it. You need at least two sets. If you don’t do back to back bookings and allow yourself plenty of time to do all your laundry you can get away with just two for now. For my private room with a double bed I have 5 sets at this time. I personally can’t stand microfiber in warm weather. I’ve tried several different sets on my own bed in hot El Paso texas. I had to use them on the dog beds because they are so uncomfortable to me.