As long as the lady coming to see you walks in confidently and looks as if she is a guest of the hotel, you shouldn't have an issue - aside from possible key card access.
When I'm preparing to travel and am deciding on a hotel, calling and asking about elevator access is the first thing I do, as mentioned by the beautiful Camille. This ensures no difficulties for the gentlemen coming to see me, the same as it offers peace of mind for the ladies. I know I love being able to walk in, flash a smile, and step into the elevator without as much as a second thought.
Enjoy your trip!