Guest is King
More Hospitality = Better Results

We've been the leading Mystery Guest supplier and training provider for 15 years
Clients rate our services 9.5
Subscription to Mystery Guest visits and more

Some of our clients

Guest is King
a unique hospitality concept

Our mission is to take companies and organizations to the next level. We don't do this alone, but in cooperation. Boost your hospitality and everything else follows!

Keep in touch;

Success guaranteed!

What results will we get for your company?
Guest is King:

Client satisfaction rate of 95%

Carwash Westland

Carwash Westland

‘’The training was brilliant. Just today I saw a colleague waving at every guest who came in... so the message must have gotten through! Everyone has been refreshed!’’
Rederij Doeksen

Rederij Doeksen

“The training was very energetic, persuasive, and fun! There was an open and active atmosphere. It's a good place for new employees when starting  with us.”

How about a no-obligation
cup of coffee?

If you're curious about our services, and want to see whether we can work together, we are happy to pop by, tell you more and get to know you!

If you prefer a phone call, that’s also an option!

    Boost your company's hospitality with
    Mystery Guests and more!

    If you want to optimise your team's hospitality, Gast is Koning is the partner for you! Our unique approach allows us to hit the right notes with your company or organization.
    We have 400 clients in the hospitality industry, and businesses in other industries know where to find us as well - places like museums, shipping companies, supermarkets, bakeries and many other retail businesses. We'd love to start working for you! Over the past 15 years, we have developed a unique hospitality concept.
    The combination of training along with Mystery Guest visits creates positive pressure within your company or organization for an extended period of time! You never know which guest could be a Mystery Guest! Are you curious about what our well-trained Mystery Guests can do for your team?
    They examine your company or organization from a hospitality angle, as that's where our roots lie. We also add a number of secret tools to guarantee your team's success. What are you waiting for? Get in touch for a no-obligation chat and let us support your team with our unique approach.