In the distant past, I have done things like that before. More recently I've left a bag at a hotel that I was checking out of, but would be back in a week. They held the bag for me (no charge.)

But with all the "security" related changes, I'm not sure what an airport hotel may or may not want to do. Your best bet would be to contact the hotel and ask the manager if they would be willing to do that for you.