We had a great time at Marina's apartment in Brooklyn! Although we were late she was welcoming us very warmly and showed us around. She had even cared for breakfast and fruits.
The apartment itself is actually much bigger than it looks on the pictures: you will have a spacious bedroom with a double bed and a living room including the kitchen and a comfortable couch, where her two cats have their space too. They are really easy to care for and rather quiet pets.
The apartment is situated in the Flatbush area which is safe and offers much cheaper grocery stores and small restaurants than most other neighborhoods in New York. You can get to Manhattan easily with an express train within 25min (subway station is in short walking distance), however, we found public transportation in general a little frustrating - make sure you know when your trains run, especially on weekends and holidays.
Marina is an excellent host - she recommended us several places to go and we could always write or call her if we had any questions, she responded immediately. We would definitely stay at her place again.