Hotel Sunce is a lovely little hotel on the beach strip, about a 20 minute drive from Split center. Some other reviews have noted problems with the AC not working, but as long as the windows are closed, it will function. It's not the coldest ever, and the fan isn't very strong, but after a while the room cools off. Reviews have also noted the lack of an English speaking staff member - happy to report that this year there is a wonderful young man who speaks perfect English!
On the plus side, the hotel's beach is very nice and clean, the food is tasty and plentiful, and the staff are always ready to help. You can leave your beach towel at home and rent one from the hotel for about 3 euros/day. The only negative in my opinion was the hardness of the bed - the mattress is thin - but this miight not be a bad thing for those with bad backs. Regardless, I would definitely return!