Denver Milk Market is a great place to walk around, eat delicious food, and indulge in cocktails. If the weather is nice (praying it is) the back alley is a great spot to have a drink and take in downtown Denver.
Ratio brewery is in the heart of the RiNo district, with numerous other breweries and restaurants within blocks of each other. We spend many of our weeks brewery hopping in this area.
We have been fortunate enough to have Union Station in a our backyard for the past two year. There are many different restaurants, bars, and shops within the station. If you are flying into Denver you can take the A-line RTD train to Union Station, and you'll have easy access to everywhere in the city. A one way ticket is roughly $10 a person.
Any time Paul and Karen Rastrelli come to Denver they eat at Denver Central Market at least once a day, it's that good! The market is a collection of restaurants, along with a full bar, ice cream shop, and numerous TVs. We highly recommend a visit!