Koh Samet
Koh Samet is a popular weekend getaway for Thais and foreigners living in Bangkok, so there are dozens of Beach resorts, bars, and restaurants on nearly every beach, although visitors are allowed to camp if they wish to do so.
Quiet and relaxing on the weekdays, raucous and fun on the weekends, Koh Samet is, despite its proximity to Bangkok, a beautiful Island with powdery white sand, generally great year-round weather, and a variety of lodging options.