Crescent beach refers to a set of beaches that begins with Baby Beach closest to town and goes about 3 miles along the east side of the island to Mansion Beach in the north. Baby Beach is about a 5 to 10 minute walk from town, but I found the beach to be rather rocky and seaweed-laden, which were not ideal conditions for swimming. The next day, my family and I walked about 20 minutes to Benson town beach, which was well worth the walk. Benson beach is a full service beach complete with restrooms, a full-service hot food lunch area, and a place to rent beach umbrellas, chairs, and boogie boards. It costs $15 to rent a beach umbrella, but is well worth it considering there are no palm trees in Block Island to keep you in the shade. The water at Benson beach is the clearest I have seen on the east coast- you can see your feet even if you walk out 50 feet from shore. The sand all around Benson beach is soft and very good for those who like to run on the beach. I ran from Benson Beach to the Bluffs near Mansion Beach and with the exception of a 2 minute barefoot rock hike, the sand was easy to run on the whole time. I was at this beach during the week and can see how it could be rather crowded during a busy weekend, but it is definitely the best of the beaches that I have been to in Block Island. Those who want a more secluded beach can check out the one near the North Lighthouse or the beaches in the southeast part of the island near the Mohegan Bluffs.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.