I loved Christina’s Airbnb. It was absolutely the best mattress, hot water and water pressure, temperature control, towels and sheets, etc of my trip to Spain. Best smelling too. Not too mention, I loved the juxtaposition of old and modern touches in the decor. Beautiful and high-functioning. It is very small, and even though it’s designed very cleverly, I don’t know if it’s big enough for more than one person, unless you really like each other enough to be this close all the time. Also, you may be uncomfortable if you’re at all prone to claustrophobia. I’m not, and I thought it was cozy and safe feeling. Technically there are windows, but the glass is not see-through, so you are definitely just you and the walls. If you open the windows, you look into a courtyard and your neighbors’ apts, so it makes sense the windows are frosted over for privacy. If I’m traveling alone again to Madrid, I will definitely stay at Christina’s again. I was smiling the entire time I was there. It felt like a warm, clean, safe haven to me.