Nothing really, but sound proofing is a bit of an issue, so depends a
bit on how considerate people are. It was fine while I was there.
Shared bathrooms - take ALL your toiletries (but towels are provided)
The location of this place is excellent. A stone's throw from famous
old town (just across the bridge), the gorgeous river walk to the
Guggenheim, and right next to main shopping drag, tram at 20 paces. The
pub opposite does an amazingly cheap and yummy "menu del dia"
Staff were lovely, free wifi
Easy to find (take cheap, quick and handy airport bus to town, get off at second stop, the one after the Guggenheim, double back crossing big roundabout, walk 7 mins down main shopping drag to smaller roundabout, cross this, then it's the first on the left, a street called Amistad - total time 10 mins walk from bus stop).