Bayer is a corporation with an active negotiated corporate travel program with negotiated corporate hotel rates spanning 2 chains. Bayer corporate codes are active at Marriott Bonvoy, IHG One Rewards. The Marriott Bonvoy code (MLM) is rated low risk — most front-desk agents accept it without documentation. The IHG One Rewards code (251321) is rated medium risk — occasional ID or pay-stub verification may apply. Bayer codes show mixed verification risk: low-risk codes dominate at certain chains while others apply stricter checks. Of 2 total codes, 1 is rated low risk, 1 medium, and 0 high risk. For the lowest verification risk, the Marriott Bonvoy code (MLM) is the recommended starting point. Coverage spans EU+NA, Global. When booking, enter the Bayer corporate account number at the hotel's checkout page or call the property directly to apply the negotiated rate.
先从最低风险品牌开始，再决定是否为了价格去尝试中高风险品牌。