Hi Jim,
In the last few years I have stayed twice at the Atrium Palace, a couple of blocks to Plaza Catalunya (which is at the end of Las Ramblas). My parents have also stayed several times, and we always had very good experience. However, lately I have read several mixed reviews about the hotel so not sure if I can give an unqualified recommendation.
I have also stayed at the Hotel Colón , in front of the Cathedral in the Old Quarter, and liked it. But that was like 10 yrs ago.
