I highly reccommend Isobel's apartment, it's easy walking distance to the 'old town' area and most other places of interest to tourists. The main rail station is very close as is the metro and many restaurants & bars. The apartment is very comfortable to relax in the ample lounge area or just have a warm cosy sleep in. Isobel's communication pre check in was excellent, she welcomed us on arrival and was super friendly and informative. We took her suggestions on a couple of occasions regarding restaurants etc and they were very very good. if you want to treat yourself go to Casa Carmela by the beach for the best wood fire paella ever, it's Michelin star but it won't kill your budget as a one off.
Great place to stay & easy to get around, highly recommended.