Terre de Haut is the main island of Les Saintes, a group of islands located south of Guadeloupe, in the French Caribbeans.
The best is to take a boat from Trois Rivières which is 3/4 of an hour from Pointe à Pitre : last boat at 5PM every day
Once you get to the island, it's very easy to find the bungalows
From the harbour : Head to the church, take the road going up the hill. After one turn, you'll see the sign on your right ("Bungalows Lahaut"). Just climb up the stairs. It takes less than 5 min.
From the airport : Same thing (You head to the church in the center of the town)
Look at the map on the french page