I recently stayed at a Doubletree hotel in downtown Chicago, and saw a novel, attention-getting way to advertise the in-house restaurant – a Post-It on the mirror: 
Here’s why it worked:
- Placement – everyone looks in the mirror!
- Eye-catching/unexpected – my first thought was “Did the last guest leave a note?”!
- Personal call to action – the message was an invitation from the chef, not just a faceless offer.
Don’t you think this has more impact than a l flyer left on the desk?
Steve Cummins - B2B Tech Marketer 