I'm so lucky that three of us could stay here. The room is very spacious and unique. Moreover, the information posted here is very accurate. The 24/7 supermarket nearby (2 mins walk), three subway stations to Manhattan (L, M, J lines 8-15 mins on foot), and and several bus stops for downtown Brooklyn are also very convenient.
Although there is no door separating the room from the shared kitchen and the apartment's main entrance upstairs, other guests who are carefully approved by Yelle will not come downstairs unless being invited. Yelle also answered my question very quick, yet detailed.
All in all, I had a relaxing and memorable stay during my trip in NYC.