I had booked a terrace room after the description and pictures (view over Barcelona) in booking site, but got a terrace room with a view to opposite house's dirty backyard - see my picture. Reception promise to check if it is possible to change next day. It sounded very strange that they didn't know even second day morning if it is possible to get a better room. We couldn't wait to find out and it was not nice to unpack and pack again, so kept our room. We went up to the roof top terrace of the hotel and saw that there really are some very nice room terraces higher and looking over Ramblas and Barcelona.
In the end we noticed that from our terrace we as well saw the back yard of Gaudi's Guell Palace and in the night could follow nice concert from palace's roof, so something good we got too with our room.
However, there was a good breakfast and hotel is in very good location on the Ramblas, e.g. Gaudi's Guell Palace is just around the corner. If you can be sure you get the room you have booked I can still recommend hotel Ramblas Barcelona