Hay Jon,
Here my two bites to the mix, how about Chicago it has lots of hotels and restaurant's and and the U-505 to see and there is water to dive in lots of wrecks to see and look at and to see more just go north or south on the lake and there is more to dive on I know more then 25 ship wrecks and you have deep water to go down in if you want to or even Manitowoc Wisconsin it has a ferry that go across the lake to dive on the Mich. side when we run out of things to see on the west side of the lake. Just something to think of.
John Hodorek