It would be easier to answer your question with more details in your post about how long you're staying, how far you're willing to drive, what you like to play.
Soaring Eagle Casino and Resort has an excellent poker room and a great staff. It's 2.5 hours away in Mount Pleasant.
http://soaringeaglecasino.com/poker.htm
Odawa Casino and Resort is located less than an hour away in Petoskey. I have personally never been to the poker room but heard good things about it. The link is to their scheduled tournaments so you might want to call to ask about cash games.
http://www.odawacasino.com/index.php...d=81&Itemid=46