Even if I did not have the chance to meet Martha (I stayed 1 night only), I can definitely say that she is a great host. Communication with her was perfect, she provided me with all the information and instructions I needed for the check-in and check-out. Her place is extremely clean and quiet, very stylish. She provided me with food for breakfast and the room had all the comfort you can expect. The location is very handy, either you have to go to the airport or the city center. I came from the airport and had no problems finding the apartment.
I would definitely go back to Martha's place :)