Resort-style outdoor pools with cabanas. Yoga studios with on-demand classes. Bicycle repair stations and dog spas. Movie theaters and game rooms. Amenities like these have all but come to be expected when a new apartment building opens in Denver. Since 2014, three of every five apartments built in metro Denver came with rents that put them in the top one-third of the rental market, according to a 2016 analysis by Zillow.