Alex Johnson Hotel
523 6th st., +1 605 342-1210. downtown; convenient to i-90.
Best Western Town and Country Inn
2505 mt. rushmore highway, +1 605 343-5383, (http://www.blackhillsbadl...). on the way to mount rushmore and other attractions in the black hills. internet access; continental breakfast included, but a good restaurant for hot breakfasts, etc., is nearby. large seasonal variations in room rates from $109 mid-summer, $59 in winter.
Microtel Inn & Suites Rapid City
1740 rapp street, +1 605 348-2523, (http://microtelinn.com/re...).
Radisson Hotel
445 mt. rushmore highway corner of mt. rushmore and main, +1 505 348-8300, (http://www.radisson.com/r...). a "hotel" rather than a motel/motor lodge, with several hotel-type amenities. starbucks on site.
For easy access to I-90, look up the many hotels off LaCrosse St in North Rapid. Hotels and motels in Rapid City tend to have substantial seasonal variations in room rates, as Rapid City is a busy jumping-off point for the Black Hills in summer but frozen into torpor in the winter.
Campgrounds are strewn all along Mount Rushmore Highway.
River View Lodge
Family-run rural getaway situated on a 100 year old working cattle ranch on the banks of the Belle Fourche River.