They miss Williamsburg’s many retail offerings. “We are trying to figure out what our spots will be,” Ms. Greenspan said. “We don’t have our ‘Cheers’ bar yet.”

In their building, still so new it is not fully occupied, the neighbors are older than in their previous place, and many have small children. “We were right in predicting that the culture would be closer to what we were looking for,” Ms. Greenspan said. “In the gym, everyone says hello, and there are full-blown conversations.”

One drawback is busy Jackson Avenue out front, but there won’t be much reason to cross with the baby; they will head the other way, toward the waterfront. And they find the high-tech intercom system frustrating, as it calls a person’s cellphone rather than ringing in the apartment.

But by happy coincidence, they are across from MoMA P.S. 1, the museum where they met at a music festival six years ago.

“As cheesy as it sounds,” Mr. Greenspan said, “it’s fun to come full circle and have a baby across from where we met.”