Microsoft Corporate Hotel Codes - MCO Marriott & SIE Hilton Discounts

Microsoft employees have access to excellent corporate hotel rates through several major hotel chains. The most widely accepted code is MCO for Marriott properties, offering 10-18% discounts across Marriott's portfolio including Courtyard, Residence Inn, and Marriott Hotels. This code typically requires minimal verification, with ID checks occurring only occasionally.

For Hilton stays, the SIE (Siemens) corporate code provides 10-15% savings and is rarely scrutinized during check-in. This makes it one of the most reliable codes for business travelers. IHG properties accept the 100857558 Microsoft code for 8-15% discounts, though verification requirements may vary by location.

Near Microsoft's Redmond headquarters, top hotel options include the Seattle Marriott Redmond (1.9 miles) and Residence Inn Seattle East/Redmond (2 miles), both accepting the MCO code. For Hilton loyalists, the Hilton Garden Inn Redmond Seattle sits just 2.1 miles from campus and accepts the SIE code.

When booking, always use the hotel's official website rather than third-party platforms. Corporate rates booked directly earn full loyalty points and elite status credits, and you can stack these discounts with existing elite benefits like room upgrades and late checkout. The corporate booking process is straightforward - simply enter the code during reservation and select the corporate rate when it appears.

Microsoft's global presence means these codes work internationally as well. The MCO Marriott code is particularly valuable for international business travel, accepted at Marriott properties worldwide with consistent discount levels.