Helena's place couldn't be better.
Located right above an L station, you can get to Manhattan in less than 15min. Not that you'll need it, tho: there's everything & more around the apartment, making sure you never have to leave Williamsburg.
The apartment was really cool. Squeaky clean at all times we've been there, and the room is quite big. On the room there's also a desk and a good wi-fi connection for the eventual work-related trip.
And Helena herself is sweet and accessible, a really nice company to hang out :)