 Although it s not that important there was no direct elevator from the 6th floor until the rooftop bar and swimming pool I had to take the stairs which was fine for me or switching elevator on the ground floor This was not an issue for me personally but it might be for some travelers 
 The hotel was a good one which is rare for a 4 star hotel Although I m used to spend my nights at 5 start hotels the Hotel Catalonia Barcelona Plaza was quite satisfactory for me in general 