I love dropping by for a few donuts for breakfast throughout the week, and a large iced coffee.
They make the iced coffee perfectly. Not too much sugar, not too much cream.
Their donuts tend to be hit or miss. While I almost always go there at the same time (just after lunch), their donuts are either super fresh, or pretty old from early in the morning. It's a bit of a gamble as to whether the donuts will be soft and delicious or a bit stale.
Either way, the service is fine, it's never crowded, and as far as Dunkin Donuts go, it's clean and gets the job done.