We stayed at Pennsylvania Farm in August 2010 for one night, whilst attending a nearby wedding. We arrived on the Sunday afternoon at 4pm (having advised that we would arrive in the afternoon) and there was no-one in. We tried to call using the details on the website, but the standard number just rang inside the house (which we could hear from the outside) and we tried another number which connected to someone who wasn't at work so couldn't help us.
We sat outside for two hours (after a long drive) before the owners got back. They said they were not expecting us, and they had no record of our booking, even though I had confirmation e-mails and had also spoken to someone over the phone. Fortunately they had a room available.
Once inside, the B&B was nice, with large rooms and nice bathrooms, and the breakfast the next morning was delicious!
I would stay here again, but I would call first to confirm my booking, as even though I had confirmation of the booking, they didn't!