We really had the perfect stay at Krystyna's. Her place is perfectly located in probably the best Brooklyn area (Williamsburg), sorrounded by trendy bars, pubs, coffe shops and restaurantes. And just 1 subway station away from downtown Manhattan. The apartment was also very clean, sunny, shiny white, cozy and very quiet during the nights.
Krystyna was very helpful during the 2 weeks we stayed with her, always available and trying to make our stay more comfortable. I totally recommend the place and the host, and I'm sure we'll come back some day.