My wife and I went to The Bar tonight with my brother who has already become a regular in its first three weeks. Don't be deterred by the non-descript outside door (I think that's the point). Upon entry, we were immediately greeted by the owner Mike and welcomed into his bar. It was a pretty good crowd for a Thursday night and the place was running really well with a bartender, a cook, and the owner mingling among the crowd.
The restaurant is run separately from the bar (different tabs), but you order at the window of the restaurant (called Neatly's and run by the owners of The Stand) and they bring it right to you at your bar seat. We had the sliders, cuban, grilled cheese, and wings - all pretty good and quick and easy to eat. I liked the sliders the best.
It has the cool dive bar feel based on location and size. It reminds me a bit of a newer Jt's Bar & Grill, which is one of our favorite bars in Arcadia. I think The Bar will do well and we will definitely be back. The only thing I'd like to see in the future would be a few more craft beers on tap. They did have Bell's Two Hearted and Huss Scottsdale Blonde, but half of their beers on tap were along the lines of Coors Light, Modelo Especial, etc.