The Francis Marion has a beautiful lobby, and the staff was all very helpful--especially the woman who handled tourist information.
However, they are a significant hike from the historic area sights and many restaurants. (Nothing they can do about this.) The Swamp Fox Restaurant breakfast was adequate (nice waitstaff, though)--I don't know about the other meals.
Also, being a historic building, the rooms can be a bit small. My husband and I are average-to-small-sized, and we found the space between the end of the bed and the dresser in our room a bit narrow (also a problem in the bathroom). We were given a room described as having a view, but from this location, the view is mostly rooftops! (Likely for most rroms in the hotel.) Not really important, but it did seem odd to tout our room as one with a view.