We were a group of 7, the house was spacious and could fit all of us with no problem. Location was lovely, very near to restaurants and cafes, also just few minutes walk to the metro station "Sol". The down side was because it was a tourist site, we had experience 3 times of picked pocket (they weren't successful tho).
Because we were 7, we could not shower at the same night as it would take ages after 2 showers for the hot water to come back, Mary did notify us about this matter tho. Then we had to split into 2 groups to shower, 4 of us would shower at night and 3 of us in the morning. The bed from the more pinkish room downstairs was a little bit unsafe as the wood parts that support the mattress were not glued/fixed and they would move around, it didn't bother me anyways. The house was equipped with heater which was very convenient as it was quite cold for the time that we stayed there.
Mary was very nice and replied very promptly. I would recommend the place to large families and friends to stay!