Staying at Carlos and Antonio's place was a wonderful respite in my busy travels. The room and apartment were very clean and well decorated, and I really enjoyed my time on the roof-top deck, with a wonderful view of the nearby Basilica. I was a little later than I thought I'd be at check-in and Antonio was so gracious and patient with me. I also got some fantastic suggestions of places to visit, eat and see Flamenco dancing from a local's perspective. I felt very safe, comfortable and welcomed staying with Carlos and Antonio and would highly recommend!
On a side note, I recommend people write down step-by-step directions on paper prior to travelling, as you can't always rely on your smart phones, or their battery life. This gave me peace of mind that I could always find my way. ;)