Plankinton House Hotel
West Water and Second (now Plankinton) Streets, Milwaukee, WI 
Last additions: 1882
Fire: 1883 survived
Replaced:1916 Plankinton Arcade (Holabird & Roche), a two-story commercial building
Extended: 1924 to seven floors (Holabird & Roche) extant as part of the The Shops of Grand Avenue, and retaining the statue of John Plankinton in the center of the circular atrium
 Later address was 123 Grand Ave., now 161 W Wisconsin Ave.
source note 
As to accommodation
OnMilwaukee.com, October 17, 2004 | Wilde didn't impress Milwaukee much | by Bobby Tanzilo
"In fact, the Milwaukee Sentinel, in an interview with Wilde that was conducted the morning of his appearance (he had arrived at 11:30 p.m. the night before and checked into the Plankinton House hotel...) couldn't help but poke some fun."
Irish Milwaukee, Martin Hintz, 2003, p.104
"he stayed at the old Plankinton House..."
 While these are not primary sources in themselves, they are the corroborative reporting of a primary source, and there is no reason to doubt them. Both articles cite the Milwaukee Sentinel's interview with Wilde on March 5, 1882, that had been printed under the following headlines:
"Arrival in Milwaukee of the Distinguished Apostle of the Beautiful."
"How the Sunflower-and-Lily Young Man Looked and What He Had to Say."
"Long on Hair and Short on Breeches the Only Striking Peculiarities."