If you're looking for a clean, affordable place to stay in North Palm Beach County, this is a good option.
Jim and his wife, Ginger, are truly nice people who live on the property (so they are always accessible). We found them to be both flexible and accommodating. My wife and I had to visit Jupiter for a family emergency at the height of the Holiday season and most places were booked. Given the last minute nature of our trip, we were lucky to not only find this home, but found the hosts flexible in terms of our stay.
The room is on the ground floor of a three story townhouse in the heart of Abacoa (a great residential neighborhood in Jupiter that has quality restaurants and bars). There is a twin sized bed, but since we were two people Jim inflated a full sized camping mattress and put a thin foam topper on top of that. It worked for us, but may not be suitable for someone with a bad back. There is an ample walk-in closet, microwave and small fridge in the room as well. The bathroom was clean and has has a large shower (no tub). There is also pool access, but we did not swim, so I cannot describe that. Please be advised, however, that the room does not have a lock on the outside (for when you're gone), but we felt it was secure enough as the main, house door is always kept locked. All and all I don't think you'd find much better for the price.