I and my 19-year-old son stayed in Inaki's loft in Madrid for three days on a visit to Spain.
We were very comfortable there - it is a large, long loft in a sleek modern style, with good window light at both ends - a bedroom area at one end, and living area at the other, with a kitchen and dining room table between. Living area is spacious and elegant enough to entertain guests in, - with firm, wide, flat modern sofas I could sleep comfortably on, so that my son and I could both have some privacy and our own space.
Great, quiet ac, strong shower, full kitchen area (including dishwasher and clothes washer) - including coffee, freshly squeezed orange juice, fruit, and drinks (complements of Inaki as a house gift). Fifteen minute walk from the train station - which has an express bus running to the airport.
Inaki was friendly, relaxed and helpful - I believe I reached out to him several times, once about a light switch I had overlooked; a second time back-and-forth about a clinic for covid tests before we flew back to New York City. Inaki really followed through on this, finding a clinic in walking distance where we did, indeed, get virus tests so as to avoid the bother of it at the airport.
Between our host and the loft, I really only have positive things to say...