While there was much to like about Hostal Opera Ramblas, the best thing was its location. Being just a couple blocks from the activity of the Ramblas as well as a subway station was a great convenience in seeing the city. We also loved that it was close to the huge food market where we could pick up a meal or some snacks for the day. The hotel is plain but clean and has a spacious business center with a computer for hire plus nice tables in case you take your own technology. There was no TV in our room, but there's a large one in the community area. We really enjoyed having use of the elevator for transporting our luggage or just for avoiding the stairs after walking all day. Front desk staff was reserved but very well informed and helpful. If you want to sightsee rather than hang out in a hotel room, we recommend Hostal Opera Ramblas. Note re Barcelona in general (or any other large city)....take every measure to protect yourself from pickpockets. If you don't know how, google it. Hotel staff can also make suggestions.
