Firstime at DLR: Crowds!

[JBurgessXXX]

I think now is the best time to travel. Recently I was in Rome and there were practically no tourists there. You can enjoy all the sights without queues. To be honest, such cities without tourists look completely different. In the future, I would really like to go to Barcelona. From the site https://tripduck.com/barcelona/ I learned a lot of useful information about this city, but I would like to know something from a person who has already been to this city. If you travel for a month, is it easier to rent an apartment or a hotel room? Where is the best place for a tourist to go? I would be glad if you answer these modest questions. Thanks in advance, have a nice trip!