Ironically, we had driven through Center Harbor this past Sunday and remembered the pleasant experience we had at Lavinia's a few years ago thinking that we should visit again. A bit later I went on Open Table to make a reservation and much to my surprise there was a notice indicating that they were closed. Their phone number is out of service and whatever they had for a Facebook Page has disappeared although the website was still up.
We also called the nearby Bay Restaurant. They did confirm that Lavinia's was out of business and had closed a few weeks ago.
For anyone who has been to the area, the restaurant was hidden off the main road in a historical old building. Unfortunately for them, potential customers wouldn't even known they existed driving into town unless they were aware of their location beforehand.