I stayed in Torre Melina last week on a business trip to Barcelona, and I want to clarify some things mentioned down by fellow travelers. I guess some of them were annoyed by some hotel policies so they wrote their reviews in affect, as imo, no chance you can rate this hotel bad.
LOCATION - not so great for tourists - on the western end of Diagonal. It is far away from main tourist sites, however the nearest metro stop (Zona Universitaria) is 7, 8 min walk and Line 3 takes you quickly to main sites. Also, there's a free shuttle bus on the hour taking you to Pl. Catalunya - sole city center.
LOBBY - enormous and amazingly beautiful with huge open air V shaped atrium. Check in fast with extremely kind staff - that applies to all staff members I encountered throughout the hotel for two days.
ROOMS - spacious, clean and modern. Ask for EVEN number room, as those have city center views - Montjuic, MNAC, Plaza Espana, downtown,....very, very nice view from my 612. Beds were extremely comfortable, as well pillows. Everything in the room is new and digital. Separate shower cabin and attached toilet.
BREAKFAST - wonderful. Huge and quality choice of cold and warm dishes, great selection of fresh fruits, pastries, cakes,...you name it.
POOLS - there are two of them, and yes - there is a small misleading fact, but is well explained.
The pool you see on the website and booking platforms is the charging one. You need to spend 75 Euros there per person in order to enjoy it. So, it is not paying like some say here, but you get food and drink for your spent money. How much you get and what are the prices - I don't know. I didn't check the prices, just chatted to a young kind hostess who let me walk around. This pool looks more inviting with better sunbeds, cabanas, sand and grass, restaurant by it,....
However, just across the lobby there's a free pool, bigger than the paying one, and closer to the hotel. Surroundings are not that fancy, but well maintained and clean with ordinary sunbeds, yet same quality towels.
So, it's up to you to choose. Imo, what's lacking is the indoor pool for colder months as Barcelona is a year round destination.
To conclude, great hotel to spend your Barcelona vacation