@anazad511 Isla Mujeres is about 4.3 miles in length. The north end sees the most tourist action with the main town area (which is extremely compact and walkable) and the ferry while the south end is host to mostly private homes and guest houses. Many locals live in the central part of the island.
@denisedaly thanks Denise. I was there some 35 years ago, so I don't need to tell you that it was very simple and at the beginning of the tourism development.