I stayed at Sean's for an entire month for work. It's a very convenient location to everything Williamsburg - restaurants, shops, cafes, smorgasburg on Saturdays, and a hip laundromat few doors down (which made me really happy). Check-in was easy even though I arrived super late...but Sean was available to walk me through the process via phone and made sure I had the wifi password.
There were street noise during some early mornings due to construction nearby but pretty much all of Williamsburg is getting a facelift; and certain late evenings (especially weekends) the entire area is so happening that you can hear bar hoppers but it didn't bother me too much. Sean left plenty of amenities in the apartment that made it easy to adapt into and felt cozy. Sean's place is definitely one of the top places I'll stay at again in Brooklyn.