Hilton has introduced a completely separate rate for those who work in travel agencies and have the appropriate qualifications. This rate program does not qualify for points or stay/overnight credits.
You can access this rate plan on Hilton’s website here:
Here are the rate rules attaches to the reservation for Conrad Bangkok Residences:
Here are the rate rules from the web page:

This offer is only valid for individual travel by a travel agent staying at a participating Hilton property, subject to availability. Valid IATAN photo ID is required at check-in. International travel agents without an IATAN photo ID must provide a valid photo ID at check-in. Offer must be booked at least 7 days prior to check-in date with a minimum stay of 1 night and a maximum stay of 7 nights. The offer cannot be combined with any other offer. The exclusive discount rate is related to the hotel’s best available rate, which is a specific rate type that varies depending on the time of purchase, is unrestricted, unqualified, and does not include a discount or negotiated rate. The travel agent’s offer is non-transferable. Other restrictions may apply.
Conclusion
Rates in North America are hardly discounted (you can do better by booking the MVP rate plan – read more here) and earn points in the process, but discounts elsewhere are good.
The rate rules are contradictory. The website says you only need an ARC number, while the website refers to an IATA travel agent ID or other form of ID for employees of international agencies. also, you can have 7 or 10 consecutive stays in this rate plan, depending on the location.