The Clarion Inn features nicely re-done rooms in a sad older building. I loved the room updates - right down to the shower/tub, toilet and sink, so often forgotten when rooms are freshened up. I did wish for an outdoor facing window, as the room was musty when I got there. Running the a/c helped a little, thankfully.
A word of warning: if you're a gym rat, don't plan on working out here. All they had were a couple of treadmills, an elliptical, a set of 10lb hand weights and one of the big resistance machines. No sign of any wet wipes for the equipment either!
The breakfast was plentiful - eggs, sausages, various carbs to toast, a waffle station (!) and lots of other food.
Overall, this was a great deal for the price. I'd stay again if I had business in Nashua.