Interested in hotel information on the Alma, The One, or The Serras in Barcelona. Which should I choose?

All three are worth the stay, so I'd suggest that it's down to location. The Serras is much nearer the sea and the Gothic Quarter., while the other two are close to each other just near the Passeig de Gracia and close to a couple of the Gaudi classics and the area is a bit more upmarket. I'd prefer the Gothic Quarter location, but no doubt you'll get conflicting views, so choose the one that appeals most to you.

Thanks so much!