There are a few very nice upscale hotels if that's your thing, but the locals can tell you the utr places. The Marriott on the east side is nice and downtown the Hyatt Regency is fairly new and good. The east side has some extended stay hotels, and they have a Marriott Residence Inn. I mention this as a possible low profile place. There is a population of well over 300,000 in that county area, but that doesn't mean their law enforcement isn't able to focus, and I'd think you wouldn't want ho road.
The Hyatt Regency downtown requires a key for EVERY floor which means you will have to go downstairs and meet every client.
If you're wanting a discreet location in a good area, check out Tallgrass Inn & Suites. There are a few locations in the downtown area that are good also if you are not super high volume.
If you'd like more information feel free to email me.
the east side near Kellogg & N. Webb Road has a cluster of okay places. I would stay away from anything on or near Broadway Avenue. Also, the locations near the airport are not the quality you are probably looking for...so I would just pass on those. I would be happy to provide specific recommendations in a private message if you like.