I stayed in the Holiday Inn went I went (when I worked for them) and always laughed that the location was described as "300 metres" from Cardiff castle. I thought it was a joke, until I got there. We could see from our room into the castle, it was great for walking into the centre and the staff helped us out with what bus to get to get to Cardiff bay. If you can't get in the holiday inn I would recommend finding the post code for it and sticking as close as possible to there.
