I stayed with my girlfriend at Mariano's place for 3 nights. His apartment is spacious and cool and beautifully decorated with his own artwork. The location is perfect, right in the centre of the city so it was easy to walk to Chueca, La Latina, and all the central attractions. Mariano gave us a warm welcome and was flexible on our check in and check out times, letting us keep our bags there after 12pm. I really recommend you stay at Mariano's!