Cecilia is a wonderful host!
I felt I could ask her for anything although nothing extra was needed during my stay. The studio apartment is as it appears in the photos with a fully functional kitchen. San Telmo is a great neighborhood with lots of bars and restaurants. The nightlife however attracts a fair amount of street noise so if you're a light sleeper you should bring your earplugs. Overall, the apartment is a great value and worth the stay.