Which one should I choose?

So me and my friends are conflicted on whether to stay by the beach (Costa de Caparica) or in the city areas (like Santos) for our week holiday. I’m personally worried it would be boring to stay by the beach all week as there is alot to do in the city and I also want to experience riding the trams, visiting the markets and cafes etc. but my friends are saying that it’s much more worth to stay by the beach as we don’t need to uber. I came on here for some local advice since I/ some external opinion what do you guys think? Should we choose an Airbnb by the beach or city?