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The silhouette of a guest walking past paper screens in a hotel room

We stay as your guests, and report as your inspectors.

Request a proposal

Discreet mystery audits and brand standards assessments for luxury hotels in more than 100 countries, with the standards, training and software that help your teams close every gap.

Brands served
90+
Countries
100+
Inspectors
400+
Languages
37
Properties assessed every year
1,000+

Chosen by leading hotel brands

A selection of the hotel groups and brands that work with GDI.

  • Hilton
  • Four Seasons
  • Beachcomber
  • Harbour Plaza
  • Rocco Forte Hotels
  • Lotte Hotels & Resorts
  • Playa Hotels & Resorts
  • Valamar
  • Millennium Hotels and Resorts
  • Sunrise Resorts & Cruises
  • Palace Resorts
  • Barrière
  • Corinthia
  • Soneva
  • Wharf Hotels
  • Atmosphere Core
  • JA Resorts & Hotels
  • Radisson Hotel Group
  • Hyatt
  • Wyndham Hotels & Resorts
  • Accor
  • Viceroy Hotels & Resorts
  • Rotana
  • Shangri-La
  • The Leela
  • SLS
  • Baglioni Hotels & Resorts
  • El Palace Barcelona
  • Public Investment Fund (PIF)
  • Red Sea Global
  • Savoy Signature
  • Amari

How an audit works

An inspector books and stays like any other guest, and assesses every moment of the stay against your own standards.

  1. Reservation
  2. Telephone enquiry
  3. Arrival & check-in
  4. Guest room
  5. Housekeeping
  6. Dining & room service
  7. Spa & wellness
  8. Concierge
  9. Service recovery
  10. Check-out & billing
An open notebook with handwritten notes and a fountain pen Luggage trolleys waiting beside a reflecting pool at a hotel entrance at night A freshly made bed with crisp white linen and pillows A stack of neatly folded towels in soft light
  1. Agree what to measure

    We build the assessment around your brand standards, your property and the questions you need answered.

  2. Stay unannounced

    A trained inspector visits as an ordinary guest. Your teams never know an audit is under way.

  3. Receive the report

    Every touchpoint is scored against your standards, with clear evidence and recommendations.

  4. Close the gaps

    Standards, SOPs, training and our software turn the findings into lasting improvement.

One partner, from audit to improvement

Each service stands on its own, and they are designed to work together.

A tall hotel lobby with a floral arrangement beneath a high ceiling

Why hotel groups choose GDI

  • Independent and discreet

    You see the service your guests actually receive, not a performance for an inspector.

  • Inspectors from luxury hospitality

    400+ inspectors of 38 nationalities, with more than 100 years of combined experience in luxury hotels.

  • Local knowledge, worldwide

    Assessments in more than 100 countries and 37 languages, aware of local culture and regulation.

  • Your standards, not a template

    Every programme is built around your brand, from a single property to a whole portfolio.

  • Flexible, without long contracts

    A single audit or an ongoing programme, whenever you need it.

  • Brand and national standards

    From brand standards to hotel classification and quality certification audits.

More about why hotels choose GDI

Tell us about your hotel or portfolio

Share your properties, locations and what you would like to measure, and we will send you a proposal shaped around your brand standards.

Request a proposal