Somehow I missed reviewing this place after going there every night for a week. I'm a pretty big fan of this place, only because it seems like the only real alternative option to my favorite bar The Griffin. Commonwealth is great but has a line a lot, and Downtown Cocktail Room is also great but is usually empty. I don't care for the other bars on the block.
Park is great because there's 3 distinct areas that each have their own vibe... the front patio, where you can chill and people watch, and it's awesome if the weather is good. Inside the bar it's just your run of the mill bar, but has it's own style of exposed wood and stuffed animals (not what you think). And then out back is this huge backyard playground that if you wandered in off the street you'd never find.
The bartenders I've dealt with here have all been pretty damn friendly, and that goes a long way to my bar selection. Add a good beer list and not too expensive prices and you've got a winner in my book.