Our stay at Marc's place was incredible. My roommate and I decided to test out Williamsburg for a month, and we both commuted to the Financial District each day. The apartment's proximity to the Marcy Ave stop for the J and M trains was honesty undersold . . . 45 second walk, and yet you barely hear the train from inside the apartment.
The space itself is beautiful, tons of windows that provide great lighting and a great cross breeze (although each room has its own AC unit, if needed). Great décor and beautiful, brand new, clean kitchen.
Marc himself is a great guy. Move-in and move-out were both flawless. The neighborhood is great, great eats around on Broadway, and it is a short walk to the hip and trendy Metropolitan and Bedford Avenues (I walked there many times, its a safe and pleasant stroll).
Overall, it was a 5-star experience, I highly recommend!