We've dined here several times. The food is consistently good (not great.....but good) and the atmosphere is great. The grounds are beautiful and the mill itself is very rustic.
They specialize in Italian American cuisine. The Penne Ala Vodka is excellent. Deserts are usually very good.
Service can be spotty - but it generally depends on how crowded they are.
If you're looking for a decent meal at a decent price, you can't go wrong at the Old Mill.