I don't know where to start. Marta is a one of a kind soul, one of the nicest humans you will meet. Her place is in an amazing location - a few minutes walk from the hustle and bustle, yet right next door to a plethora of food and culture options (Marta is super helpful, and a lifesaver for someone like me who came to the city on a spur of the moment). Please don't forget to eat at the pizza place (la tradizionale) when you stay.
Her hospitality is other-worldly - she helped me with my laundry, even going so far as to turn the items inside out for drying. I am not saying that she does that as a matter of course, but touches like that really show the kind of caring and lovely person she is.
Her place is a tremendous value, and I cannot recommend her enough for her qualities as a host.