A string of hotels closed in the Chicago area over the holidays. The 429-room Sheraton Chicago Northwest hotel and its CoCo Key Water Resort Arlington Heights ceased operations on Dec. 28, following failed attempts to negotiate union concessions and real estate tax increases, according to a statement posted on the hotel's website; the economy and Chicago's hospitality market overall were cited as well. Likewise, the 466-room Wyndham O'Hare in Rosemont, Ill., closed Jan. 1., after defaulting on a loan. According to a spokesperson from Wyndham Hotels and Resorts, the company just recently became aware of the owner's intent to close the property. "We are in the process of evaluating this situation now and how it will affect our customers. The comfort and convenience of our customers is our primary concern, and we are diligently working through the details at this time in order to accommodate our guests and limit any inconvenience they may experience."