I loved my stay at Consuelo's place!
Her husband, Alberto, was there to greet me and carried my very heavy suitcase up 4 flights of stairs (they also brought my suitcases down when I was leaving)! He also showed me how everything works and made me feel very welcome.
The flat is small but VERY clean and tastefully decorated.
If you have problems walking, then the lack of elevator is a problem, but for me it was actually very good - free gym ;)
I would highly recommend this place!