Yes, we were at the Days Inn at Appleton - I went to Oshkosh, spent the first Sunday in the Museum and around Pioneer Airport, and then went to the first three days of the show itself. The wife came to AirVenture on two days and spent the other two in Appleton.
We thought Days Inn was wonderful - really handy for the EAA shuttle bus and a good range of local restaurants, and the staff were really helpful, despite (or because of) thinking that we were Australian! (We did book via an Aussie website.)
Rod