Railay Beach is a short boat ride from Ao Nang. The cost was about 2 USD. The only way, from what I was told, to get to Railay is by speed boat. Railay is known for its rock climbing and isolation. It was worth the day trip, be careful if the water is not calm. I went when the ocean was choppy and received a mouthful of water. The ride was longer since the waves/current was strong. The beach is relaxing and there are some decent places to eat. Most of the places to stay are going to be upscale places. There are not many hostels. There are a few shops, restaurants, tattoo parlor and gun range.