PROS
Guisela's place is nice enough. The area around the apartment has nice restaurants and is near food shopping at the well stocked but overpriced Sumesa supermarket. If you are on a Whole Foods type budget, Sumesa supermarket is fine but has New York City boutique supermarket prices on most items. Selection is very good but expensive! Hot water in shower was excellent and water pressure was very decent. The place is quiet.
There are decent restaurants of all types nearby that are in all price ranges.
CONS
The apartment was very funcional but did not seem well cleaned. There was no bottled water when I arrived, and my partner found hairs in his bed. The front room TV had Netflix, but unless you have your own access number to Netflix, you can't use it. The other display in the bedroom has Netflix in Spanish but we could not figure out how to configure it to English. Unless you are tall, the kitchen shelves and microwave are too high unless you use a stool.
As the apartment doesn't get any light into it, it always seemed very cool. I think that unless you have a heater in the winter, the front room would be cold and unpleasant from the months of December through February. It could use rugs.
As the owner lives 15 minutes away by car, there is no doorman or guard on site if you had any issues or emergencies. You are totally on your own. I still recommend it for warmer months but with issues noted above.