In addition to the bungalows that tend to be located on the beaches of Koh Phangan where tourists can experience the pleasure of opening their door and almost stepping into the sea there are some fancy hotels springing up should this be the kind of holiday that you are looking for. The island tends to be dominated by the bungalows however here is a list of some Koh Phangan Hotels:

Mandalai Hotel, Chalok Lam
Sea Breeze Hotel, Haad Rin
Weangthai Hotel, Thongsala