Vivis Apartment is really located in the heart of Williamsburg, a young and lively neighboorhood. The apartment is comfortable to live in for two people (we stayed there for a week), lovely decorated, clean and with a super comfortable bed. Vivi is very nice and cooperative host. It's only one subway stop to Manhatten, you can get there really quickly. On weekends, there's a lot going on in Williamsburg, nice places to have brunch, flea markets and more.
The one and only downside is the small and old bathroom, wouldn't recommend this for people who need space in their bathroom or want to stay longer than a few weeks. Though we always had hot water and it was clean!
But in total, we totally recommend this place :)