While District has a decent happy hour and nice setting - 4 stars for both, it is inconsistent in its management. The food and service are decent and they have a some great beers on tap, and at very cheap prices for a Sheraton bar, but you can never count on them being open late night. They have a reverse happy hour that starts at 10PM, but on a recent Thursday night, with about a dozen people still in the bar, they called last call at 11PM, 2 hours before the stated closing time. Another night they stopped serving around 10:30. This happens often. This is highly unprofessional for a major corporate hotel that states they are open until 1AM. Maybe the manager wanted to go home early?
Thankfully, local bars like the Lost Leaf are open when they say they are open. A great beer selection, walking distance from the Sheraton, and you can get late night food next store at JOBOT.