When we went to Barcelona in 2019 we arrived around 8 am and went to the hotel - they had lockers to store our luggage until check-in. We just walked around taking in the sights of the city. We even took a boat ride, got some lunch, walked though the gothic section, took a ton of pictures...before I knew it, it was time to check in. Got unpacked (we also had 2 days prior to cruise), enjoyed the balcony of our hotel for a bit, walked around a bit more looking for a dinner spot (most seemed to offer the same thing on our section of Las Ramblas) and by 8 pm local time we were wiped out! We had a tour scheduled to pick us up early the next morning - but going to bed early got us on schedule for the rest of the trip. Wish I could say the same for returning to the states. After 19 days in Europe it took me a good 2 weeks to get back to our time zone....uuuggghhhhh.