We are spending a few days in Key West and are looking for somewhere a bit quieter to finish off our hol this summer. We are a couple early 30's looking to relax, eat out, stroll & browse. Not interested in busy busy family resorts. We were looking at Sanibel (quite expensive). Any ideas would be greatly welcomed. Somewhere near the sea, relaxing with some nice restaurants (casual & otherwise), sunsets, picnic places. Just total chill out. Somewhere with a bit of life but not overly crowded. Not familiar at all with Florida so any help would be greatly appreciated. We will have a car. Thank you.