This is an excellent natural harbour. You can see in this picture, taken from the top of the Castillo, that you come round the first post breakwater, past the second starboard one, and then almost straight ahead to enter the marina. The only hazards are other vessels, including dinghies racing between the second breakwater and the marina.
When you come in through the breakwaters, call up the marina. They will have a marinera on hand to assist. If you are not bows/stern to on the pontoons, you end up alongside on the quay round the edge of the marina. This is not as secure, but more convenient for facilities and the town. (You can't quite see our pontoon; there is one more to the right of the photo.)
On the outer edge there is quite a bit of swell in a southerly and wash from the tourist boat. Snubbers or springs on the mooring lines make you and the boat more comfortable.
Prices are mid-range and include power and water. There is a large washing machine in the ablutions block. No wifi, but there are cyber cafes in town.