Clean, quiet, and comfortable, with a basic selection of snacks/breakfast foods (and coffee!). The location was in a great area close to the beach and in short walking distance to the old town (where you can find great pinxtos/bars, historic buildings, etc.). Eva was professional and communicative - though travelers should note that she has another full-time job and a busy schedule, so it is important to communicate with her in advance about checking in, especially if you are traveling internationally and cannot receive messages unless on wifi.
As a couple of travelers in their 20's on a low-budget backpacking trip through Spain, my partner & I chose Eva's place as a treat on the nicer end, but I'm sure many vacationers would find this place quite affordable. The room was about the same price as (if not cheaper than) the average private double room in a hostel/pensione in Donostia, and in my experience, much nicer than the average pensione.