I've gotten good using key cards, but at the Hilton in Anaheim recently it was not unusual to see people having a lot of trouble. I never keep my key in my wallet. Perhaps that helps.
I have never had someone walk into my room with a key card while I was in the shower. But my valuables go into the bathroom with me. Along with a full set of clothes. I appreciate hotels that have a telephone in the bathroom.
I just stayed at a Radisson that was musty and dusty. That is a pet hate for sure.
I really enjoy top quality room service, but a major pet hate is when trays linger in hallways for a very long time. At the Mayflower hotel in Washington, DC, a party cart hung around outside my door for nearly 2 days! As I had the inconvenience of stumbling around it, I made sure that I had enough sodas and wine to see me through my meeting.
How about nightlights in bathrooms?