Stayed in Seth's apartment for nearly six months from September to February. enjoined it very much. The place was very spacious, I even had one room as a walk in closet.
The surroundings were great, three different subway lines very close, a superb bagel shop next door, grocery store on same street, a gym in walking distance and much more.
Park Slope is a very nice and quite area, although you have a lot of pubs and restaurants close by, and I never felt insecure coming home late at night. I would very much recommend a stay at Seth's place.