IECA is not working with a housing bureau for the 2019 IECA Annual Conference and Expo. Reservations should be made directly with the Hyatt, nobody else. Any other company or travel agency contacting you is NOT affiliated with IECA.
In some cases, these companies claim to have hotel rooms at discounted rates, but when you arrive onsite the hotel does not have your reservation. As always, IECA secures a housing block providing discounted and convenient hotel rooms to the conference. If you make reservations through any other organizations, IECA is unable to guarantee the validity of the reservation.