Night-shift workers wrapping up a closing shift, insomniac freelancers chasing a deadline, and travelers still running on a different time zone all hit the same wall in Boulder once the sun goes down: most of the city's reliable WiFi spots — the cafés, the libraries — lock their doors by 8 or 9pm. The short list of …

St. Julien Hotel & Spa lists complimentary WiFi as a standard amenity — a line that appears on nearly every Boulder hotel's booking page, and one that tells a visitor almost nothing about whether the connection in Room 412 will hold a 9am video call when the conference crowd checks in at the same moment. Shared hotel …