When I was in my 30's my parents began vacationing in Wildwood, NJ at just such a place; they always got the "efficiency"-type rooms so Mom could make breakfast. I joined them many times, so much so that being at the beach there became my favorite type of summer vacation.
Two blocks from the beach; stay up late, get up late, hit the beach for a couple hours, come back to the pool in time for a late lunch, hang around the pool the rest of the afternoon, take a nap, go out for dinner and music or the boardwalk. Good, good times.