We had a great stay in Domingo's apartment. We traveled to Madrid with our three adult children (26, 23, and 21) and one of their friends. The apartment layout was ideal because there are two separate living areas. Our daughter and her friend had some privacy and a bathroom for their use in the front of the apartment. I liked having a separate toilet stall in the other bathroom. The apartment was quiet, especially in the back bedrooms.
The decor is cool and quirky. This apartment is BIG! You will definitely not be on top of each other. The kitchen is stocked very well--like your kitchen at home. We didn't cook on this trip, but you would be able to make good meals with all of the spices, utensils, and space that are available. We used an HDMI cable to stream a movie from a laptop; it was fun gathering together in the living room in the comfy chairs to watch together. The room temperature in the apartment was pleasant for November. I didn't see any AC, so summer weather might not be as comfortable. There are a lot of stairs, but if you don't have mobility problems, it's good exercise. There was a slight septic smell when you enter the building, but the apartment itself smelled good! We will stay here again on our next visit to Madrid.