When you walk up to this newly-opened space, a large neon sign welcomes you to the Mermaid Star Motel. But don’t let the name fool you—this is no ordinary roadside inn. The 15,000-square-foot space in the Warehouse Arts District of St. Pete isn’t a motel at all, but rather a massive interactive art exhibit. The fictional Mermaid Star Motel is at the heart of Fairgrounds St. Pete’s inaugural exhibition. Located inside a former factory, the space is split into a series of rooms, each designed and decorated in a unique…