Just got back from Seaside and I must say it is a wonderful little place. The atmosphere is so laid back....crime rate so low that we didn't even see 1 cop there in 6 days! It is a mix between Key West and the Carribean. The water and sand are beautiful as well. Only draw back is that it is pricey (i.e. $700/night for a 2 bedroom cottage on the beach). They have a hotel there also: Water-color Inn. The place is somewhat artsy.....local artists have shops all over the place. Hell, the architecture is artistic in itself.
Note: There are no supermarkets, drugstores, etc. So, if you rent a cottage, shop before you go.