nquin - providing you want to stay somewhere scenic in Krabi for a few days, I suggest one of the cheaper places I mention on East Railay.
OR - You will find a lot more cheap places on Ton Sai and the backpacker/climbing sets that hang there are always good company. The beach bar at Ton Sai Resort is a great meeting place.
Ton Sai is picture postcard with its awesome cliffs and nice beach at high tide - but the beach looks a bit ordinary at low tide as a shot on my Krabi/Railay/Ton Sai/Ao Nang page shows. No matter, West Railay is a short but arduous trek over the southern headland.
I mention a few cheapies on that page, but the time of year you are going you will be able to walk up the loop track and get a bungalow at just about any place you like the look of.
If you change your mind and want to overnight in Krabi town only, Chan Cha Lay guesthouse is one place you will meet travellers and is centrally located.
