This flat is in an unbeatable location and is very spacious. A great base for exploring San Sebastián.
There are, however, a few things to be aware of - most notably that the flat seems to be part of an old hotel and so shares two (locked) adjoining doors with the next door flat which means there is often a fair amount of noise from the neighbours.
Generally speaking, the flat could be in slightly better shape and it lacks a personal touch. At the price it is at, though, this seems not unreasonable.