When you arrive to Roatan by Cruise, you will be in Coxen Hole where is the main port of Roatan (number 1 in the map). If you arrive by airplane, you will be almost in the same spot, as you can see the landing strip in the map near Coxen Hole as well.
The most popular beach is West Bay (number 2 in the map). To get to West Bay, you need to take a taxi, very inexpensive and takes about 20 to 30 minutes. There is only one main road in Roatan.
West Bay Map
The second most popular place in Roatan is West End. You can find small souvenirs stores, diving shops, good restaurants on the beach and the best bar on the island called “Sundowners”. You can get there by Taxi from Coxen Hole or you can take a water taxi from West Bay as well. I think it is a good idea to get here by taxi and then go to West Bay by water taxi. (number 3 on the map).
West End Map