The apartment is perfectly located in Williamsburg. Just a few minutes walk away from the L-train station. There are a lot of restaurants, bars and shops (also an Apple Store) in the sourrundings. Williamsburg is a totally great and safe neighborhood.
The apartment was very clean and has everything you need. We heard neo bass from the bar on the first floor but you can hear a bit the traffic of the street. For this it is better to use earplugs (if you cant deal with these sounds) or you are tired enough by a lot of sightseeing ;)
Unfortunately we did not meet Kristina personally but everything was well organized (handing over the keys and brochure with nice information). Communicating with Kristina was fast and reliable.
We would definitely choose Kristina's apartment again. It is perfect for 3 or 4 persons to discover NYC or great Williamsburg or Brooklyn.