Location, location, location. All the major daily things are walkable. The place is a 7 min straight-line walk to the beach, a Dia grocery store 1 min away, a local market (and Mercadona) 5 min away, local hidden restaurant gems in the neighborhood, a bus stop to get down town right opposite the house's door.
The house itself looks bigger in the photos but is still nice. Open concept, loft-style main floor with workable one-person kitchen (you'll need to run the dishwasher each day), table, good-sized main bedroom, tiny small second bedroom, an outside door to shady terrace/outside washer. To get upstairs there is a narrow spiral staircase. Not for the elderly or those with a bigger frame. Upstairs space with second-largest bedroom is in A-frame i.e. big space but slanted roof. Big desk in that space, which is great!
Prop the wifi router on the sofa to get rock-solid coverage.
Mercedes is communicative just rely on cell phone rather than Airbnb app.