This port is a good combination of port/marina. It is a fishing port, and thus a cheap place to berth. But it has a quay reserved for pleasure crafts, so you don't have the risk of being squeezed between big fishing boats that can cause damage. It is a big fishingport and very well accecible for bigger yachts as well. The depts are good in this port, because the fishing boats themselves have a draft of about 2 meters.
The nice thing of this port is the big shipyard. Especially in winter it is a delight to watch all the fishermen paint, fix and rebuild their boats. The quay for pleasure crafts is busy, it is very well possible that you have to climb 3 boats to arrive at the quay.
The castle is nice to visit for the vieuw, and to have a quick look into history. but don't expect too much from what is inside. there are no signs with information once you are inside, and the team that works here does not have a clue either ;)