Hayward is one suggestion that regularly pops up for most people. There are quite a few lakes in the area, but most are not what I would consider remote or difficult to access.
There is some steady tip up fishing early for Pike, LMB, and the occasional walleye at dawn and dusk on some of the more popular lakes there. I’ve never hammered crappies up there, but have found a good average size when I do run into them. I think IDO, Gillespie, and others have done some ice videos on the Chippewa Flowage with success if you cruise YouTube.
Your best bet is going to be to patronize the local gas station, pubs, bait shops, etc. for intel when you arrive. A lot of the attention on here focuses on LOTW, URL, Mille Lacs, and the major rivers for current reports.