Hampton Inn, almost but not always
Quality Inn and Suites, sometimes nice
Comfort Inn and Suites, sometimes nice
La Quinta, sometimes nice, but sometimes terrible
Holiday Inn Express, usually
Best Western run the gamut from really really nice to not so nice
You can also find random nice ones in random locations, so it's always good to check Trip Advisor beforehand. There's an app for that.
Nearly all of these types of places have free wi-fi, with varying degrees of functionality/reliability.
http://www.cheapestdestinationsblog.com/2012/06/12/the-best-cheap-hotel-chains-in-the-usa/