Hotel Solares was a good deal for the money! It's not fancy, but it's reasonably clean, has a nice pool and hot tubs, and the staff was lovely. Our only trouble was that the faucet on our tub was broken when we tried to take a shower, but they were very responsive. We sat in the hot tub while the fixed it for us.
We'd recommend this as a good option for an affordable, convenient place in SC.