3K Madrid was quite ok, but there were some small things that let me down; breakfast (not included, price pretty high; eur 8,50 per day) was quite simple, coffee was just horrible; in bathroom there was a bath tub, but only a shower fixed to the wall - no tap! There were two wardrobes only to put clothes on hangers, but only 6 hangers and there were NO shelves for clothes at all! So there was plenty of room for clothes, but not anything to hang them with.. There were also ants in my bathroom... But all in all, the hotel was quite good for its price.
Personally, though, next time I would like to be nearer to the river. We walked a lot and it gets a bit boring to walk from this hotel to the center every day... same routes became too familiar within a week.