Great apartment and excellent location. I was easily able to contact Karla and get the keys to the apartment. Check-in and check-out process was very smooth. Apartment has 24 hour doorman / security, which is great.
The only disappointment, which was very minor, is that the suspended balcony lounge chair (pictured on AirBnB) was broken. No big deal, though.
Overall, I'd recommend staying at this apartment. I will definitely look into availability next time I'm in town.