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There are an increasing number of fraudulent websites that impersonate WCN 2017. We would like to alert all participants to be aware of possible scams and to strongly advise you to only use the official WCN17 housing agency Congrex Travel. ISN is not responsible for any booking done with other providers.


Hotel Accommodation

Congrex Travel is the official congress partner for hotel accommodation and is the only agency offering accommodation on behalf of WCN 2017. Early booking is highly recommended as rooms traditionally sell fast in prime locations.



All rates quoted on the Official Hotels offer include breakfast, mandatory bellboy and maid charges as well as the city tax. VAT is not included in the rates (see below).



All foreign participants / visitors (Non Residents) to Mexico taking part in international events profit from a 0% VAT tax policy. This policy applies only if the participant’s hotel booking is made as part of a group, in this case the Official Hotels Bookings made through the Official Housing Agency are consolidated on behalf the event as a Group. This policy does not apply to individual bookings made through booking engines. For Mexican citizens, the VAT of 16% will be added to the hotel invoice and needs to be paid upon departure directly at the hotel.


Group Bookings

For a customised offer, up to date availability and detailed terms and conditions for your group please contact the official housing agency at wcn2017.hotel@congrex.com


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Contact details:

WCN17 Accommodation Service

Responsible Person: Nicole Hirschmann - Congrex Travel (Switzerland)

Email address:wcn2017.hotel@congrex.com

Fax: +41 61 690 94 14


US & Latin America Accommodation Phone Support

Congrex Panama Co. S.A.

Phone Number: +507 317 1727

Operation Hours: 08h30 – 17h00 Time Zone: -5 GMT / -1 US Eastern Standard Time

Languages: Spanish and English

Contact Persons: Susana Jimenez / Cinthya Uzcategui


Worldwide Accommodation Phone Support

Congrex Switzerland

Phone number: +41 61 690 94 22, direct line only for WCN17 calls.

Operation Hours: 08h00 – 17h30 (Central European Time) +1 GMT

Languages: English, German and French. Basic knowledge in Spanish and Italian.