Maria Teresa, the proprietor, has a beautiful apartment and, more importantly, provides terrific service. She is bilingual, provides a Galaxy Note for your to use to contact her or make local calls while visiting, and she provide an amazing breakfast every morning, along with a refrigerator stocked with Havana Club rum, sprite, cola, beer and bottled water.
The only knock is that the apartment is right above a bar with salsa dancing which can be a bit loud on the weekends at night. I recommend you bring foam earplugs with you and it won't be a problem. We would definitely stay here when we come back. The location, cleanliness and service can't be beat.