Radison blue then , there are lots of hotels around the centre,the radison is five mins walk from central train station , is about 20 story's high, I got my dick sucked for about half an hour ( was there an hour ) on the 18th floor gazing over the bay with the sun going down on a hot summers evening, nice memory . Yes, everything is walking distance from there, millennium stadium, castle, st David's, cinemas, nightclubs, pubs, etc.