Go with a busy downtown hotel.

Suburban motels can attract notice.  Keep an eye on local boards and newspapers for LE activity.  For example, a newspaper article recently mentioned how police are asking motel managers in their town to report suspicious activity such as men coming and going to a room where a single woman has checked in.  You can bet I'm not planing any partying in those motels now.

Bring an overnight bag with you when you check in.  Don't make it look so obvious.  Tell the person no phone calls to you from the lobby.  Always dress conservatively.

This is all common sense stuff and if you follow it you'll be fine.

Outcall for me needs to be in a 3 star or better hotel.  Not because I'm snooty but because I like the added security of a lobby where the individual room doors open into hallways, rather than a Motel 6 type of place where the doors open to the parking lot.