Marga and Maria are nice host. Maria came to pick me up at the airport (which save me lots of headache with transportation at 5 in the morning ;-) The bedroom I stayed in (single bed) is basic but comfortable and clean as is the bathroom.
It's located less than 5min walk to the metro Embajadores and you can walk to the historic centre in about 15min. It was a nice stay and if you're on a budget I recommend it :-)