We spent 2 nights in a Savannah B&B and the next night in a hotel in Tybee Island. The B&B prices are about the same as some hotels but I liked the atmosphere.
Juliette Gordon Low's house was very interesting. Maybe it won't be full of Girl Scouts, lol. She and I have the same birthday so I've always been interested in her. Did you know that she got a piece of rice stuck in her ear at her wedding and that resulted in her going deaf (okay, I hope I remembered that correctly,
).
Do a websearch. Savannah has some great tourism webpages to help you save money.
Hilton Head SC is just up the coast!
Warning, it does get very hot and muggy in the summer! And look out for mosquitos.