Isla Mujeres is a short 20 minute boat ride from Cancun. It is 7km long and 650m wide and popular with day trippers from the mainland. Once the day trippers have gone home the island is a lot emptier and more relaxed.
Cars are allowed on the island but most people get around by Golf Cart or moped/motorcycle. We decided to hire a golf cart to explore all of the island.
The island has some great beaches and was a nice place to relax for a couple of days. The main town is ok, not great but it has everything you need.