We purchased a Groupon for this restaurant without knowing much and about it, and we were pleasantly surprised. It undoubtedly lives up to all the good reviews. Both our server and bartender were friendly and accommodating. The beer selection was really awesome, and the food was GREAT. I had the Asian chicken salad and my boyfriend had the burger. Both were delicious. This place can be a little hard to spot if you're not looking close enough (true to the name, you enter through the side door of the building).
If we lived in Madison, this would definitely be a spot we would frequent. Highly recommend!