Guantanamo is a very quite city between Santiago de Cuba and Baracoa. When you have time is nice to stay two or tree days in this city because there aren't too much tourists (when there are even) and you can relax yourself and try to enter in the Cuban everyday-life. In the town centre the colonial architecture is preserved. Visit the churches of the city and enjoy the small preserved part of the city.
Excursiones
How to go to Guantánamo