Cat's is a very nice place, down in the basement but not dark and gloomy (has a concrete light well), and the benefit is no street noise at all. A quiet block, maybe 10+ years old, and only distant footfalls and occasional morning thumps from neighbours' kids. Quite cozy (it snowed and was cold outside), with AC units in the bedroom and living area, and a small heating register in the bathroom. Cat is a great communicator and very helpful, although in SE Asia throughout our stay. Her cleaner Martina is good also.
A very comfortable apartment, with plentiful and reliable hot water, and an excellent washing machine and dryer (we were here over three weeks). This is a spacious place for two people. You might be able to find a bit cheaper, but for accommodation in a great part of Williamsburg, you may not find better.