ASM has secured discounted room rates at Portland Marriott Downtown Waterfront and encourages participants to book within the official ASM room block at Portland Marriot for the best selection and rates. ASM will provide support only for reservations booked within the official room block. ASM is not responsible for hotel reservations booked outside the official housing block. Attendees who choose to book with an agency or hotel reservation site will be subject to the terms and conditions outlined for that reservation and outside ASM's control.

Making a Reservation in the Official Room Block

Online and call-in reservations will be available on a first come, first served basis until Thursday, Oct. 9, 2025.

Portland Marriott Downtown Waterfront | $196.00 plus tax

• Book your group rate for ASM Conference on Biofilms.
• Call-in reservations: 1-800-546-9513 Reference ASM 2025 Biofilms Conference.

Hotel Reservation Deadline

• All housing reservations at the ASM Biofilms conference rate must be made by Thursday, Oct. 9, 2025. After this date, reservations will be accepted by the hotel on a space and rate available basis only.