We stopped during a recent trip to Maine. The whole vibe was just what we Ohioans were looking for. We're not great judges of what's good lobster but we liked ours fine (might have been a tad overcooked, but nothing serious). There are inside tables upstairs and outside tables that look over the harbor. It's a bit off the main road.
I read some of the negative reviews...I can imagine that problems might arise if the place were very crowded (which is wasn't during our visit), so take that into account. This is a great place for kids...but you would run up a tab.
If you're looking for a "Maine experience" and it's not so crowded that you can't find a space in the parking lot, you'll like Young's Lobster Pound.