If you mean closest hotles near by here is the answer : Fairmont Chicago, Hilton, congress Plaza, Marriot
If you search for hotels on the loop all of them are decently close to navy pier. We stayed at the Wit and walked everywhere, including millennial park, navy pier, etc. Also you can cab or uber and its fairly inexpensive
Intercontinental Michigan Avenue. A short walk via a staircase on Michigan Avenue
I believe Trisha means "classiest." I'm not sure what hotels are near navy pier. We stayed at a Double tree north of Chicago and it was very nice and inexpensive. We parked at Soldier field and used Uber to get around downtown.
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