Heading to Barcelona for a couple of nights before a cruise in October and looking for hotels near the cruise ship port. Also, concerned about transportation between the downtown and the port area. Is it best to take the Port Bus or is there other transportation I should consider? And, want to catch a few sights like Sagrada Familia, Guell, and Montjuic Cable Car/Port Cable car. Just hoping there is enough time

I stayed at the Ibis Centro Sagrada Familia. Near the church and 2 Metro stops. Good price.
take a cab to the port