Holiday Inn will be the cheapest ($216 on cancelon) within walking distance and it keeps you in the better areas. Cancelon.com $216 $261 with taxes + fees https://www.cancelon.com
The only hotels super close are the Marriott and the Sheraton. There's also a Residence Inn close. There's a Hampton Inn on Glenwood, which is maybe a 10 minute drive. Have you looked at Air BnB
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