That place is really nice - the sand is golden and fine, and it's a great spot to relax. I didn't get to see the famous cargo ship that's supposedly wrecked there, but I'm sure it's an incredible sight when the tide is out.
Praia de Lago is the perfect spot for families, with its fine sand and lack of waves making it ideal for children. It's easy to access and located in a port and industrial area, with plenty of amenities to make your day out even more enjoyable.
Finding this beach can be a challenge, but that's what makes it so peaceful. It's quite small and its stones are smooth due to erosion from the ocean. There are usually waves, and it's easily accessible by car. It's not developed like many other beaches.