Housing and Hotel Information

In order to create a safe environment for in-person networking and collaboration, attendees may be required to share either their immunization or testing status to enter the Convention Center. Additional information will be provided in September as we continue to evaluate the risks of spreading COVID-19 and creating a safe environment for our members and attendees while in Denver.

Orchid Events is the official housing company for Entomology 2021 in Denver, CO. Attendees can obtain discounted convention rates by reserving through the official Housing Reservation system from this page starting June 15.  The deadline to reserve your room is October 1, 2021.

Reserving within the official ESA housing reservation system is what enables us to secure better rates for our attendees, as well as to contract desirable space and dates for the future of the ESA. The negotiated discounted rate at our host hotels ranges from $139-$209 USD per night single/double + tax and offers you the best access to the meeting and downtown Denver, you can’t beat it!

Thank you for booking within the official hotel block. ESA appreciates your support and understanding of this important issue.


Orchid Events is the ONLY official housing company who may contact you and imply or indicate an affiliation with ESA and Entomology 2021. Booking through Orchid Events, ensures you will be working with a reputable company, that your credit card information is secure, and that you will benefit from all services provided to conference attendees at the official hotels.

If you are approached by any company other than Orchid Events regarding Entomology 2021 housing, please be aware that they have no relationship with ESA. Reservations made through any agency other than Orchid Events will be at your own risk.

Companies that contact attendees and exhibitors with fraudulent offerings of hotel rooms at significant discounts are commonly referred to as "housing pirates" or "housing poachers”. These companies often misrepresent themselves by illegally using our logo. Lured by highly attractive rates, exhibitors and attendees fall prey to these imposters losing significant deposits, discovering hidden costs, credit cards charged in full at the time of reservation, or not providing the hotel reservations promised.

If you are contacted by anyone other than Orchid Events, please get as much information as you can, then contact Orchid Events at mailto:help@orchid.events or call toll-free 1-800-217-0002.

Why book your hotel room in the Official Hotel Block?

  • Lower Rates! Based on a guaranteed percentage of attendees staying in official conference hotels, ESA is able to negotiate with the hotels to provide discounted rates from their normal charges.
  • Closest hotels to the convention center.
  • Earn Hotel Loyalty rewards points when booking in the Official Hotel Block.
  • Immediate email acknowledgement of your hotel assignment.
  • Complimentary Wi-Fi access in your hotel guest room. While some hotel brands already include Wi-Fi as part of the room rate, other hotels charge as much as $12.95 per day.
  • Reliable customer service available to assist with your reservation needs.
  • Protection in the event the hotel has oversold guest rooms.
  • Network easily with other conference attendees staying in the Official Hotel Block.
  • And much more!

Support ESA by staying at the official conference hotels!

  • Unfilled rooms can cost the association thousands of dollars which can apply pressure to increase the
  • conference registration fees to offset these costs.
  • The number of booked rooms attributed to ESA is shared when contracting future venues. The more rooms booked in the Official Hotel Block, the better leverage we have for lower room rates and fewer contracted penalties in the future.
  • Our room block history impacts the amount of meeting space a city or venue is willing to hold as well as the cost. An excellent pick-up history results in better leverage when negotiating with convention centers.
  • We know there are often attractive alternative hotels or reward programs that provide incentives. Please think twice before booking "outside the block" and we will continue to negotiate the best convention centers and the best hotels at the best rates for future ESA meetings. You can help us.
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