We stayed here three nights in July, a married couple in our 60s.
The photo is almost accurate. The bedroom had only one night stand, not the two in the photo, but the room is also quite large, which is not indicated in the photo. The bed is comfortable. There was one reading lamp, a small desk and one chair. A small balcony with full size glass doors. A key to lock the room. A large closet, dresser built in. Not included in the photo: a modern kitchen with washer and dishwasher, coffee and tea making facilities, everything needed for self-catering. Two modern bathrooms.
The apartment is very well located, only a couple of blocks from the cathedral, easy walking distance to La Concha beach and promenade, the old city with Santa Maria del Coro and St. Vincent churches, many bars, restaurants, and shopping. About three or four blocks from San Martin market, in the middle of a modern shopping area, a fresh foods and meats market, and underground one floor, a very large and modern supermarket, and below that, parking.
The only disadvantage of the location is the noise at night. Mario did provide earplugs, but we did not use them. The city apparently cleans the streets at night with water, and that did wake us a few times.
Mario was an excellent host. He met us on the street, at 37 (not 27). The street has two names because the city has everything in Spanish and Basque. He gave us a map of the city and on it indicated our location and the location of things we asked about. He pointed out money-saving cafes, etc. Another couple was in the room next to us and we only met them the day we were leaving, while they were preparing a delicious lunch in the kitchen. Mario made clear that he was ready to assist if needed.