We stayed for six nights during Semana Santa and were very comfortable despite our late hours observing processions. Gema is a world-class communicator and special hostess who helped us with information on her favorite restaurants and attractions. Her apartment is very user-friendly with many special touches, perhaps because she used to live there herself.
The beds were large and comfortable. The almost-new sofabed was notably long (I'm over 6 ft tall) and perhaps queen-sized.
Her clothes washer was just one floor up (with the building's others) with drying lines on the adjacent roof terrace. It was very nice to have a dishwasher too, although we generated few dirty dishes.
The air conditioning was appreciated even in April. We tried to comply with the building's voluntary policy of non-use at night, for those with open windows.
As others noted, the internet was somewhat spotty but since we had data on one of our mobile phones we weren't entirely dependent on it.
You will be very comfortable at Gema's place and so glad that you stayed there.