How would you measure product-market fit for Guest App among luxury travelers

Problem Statement Description

Product context: Airbnb is a travel marketplace connecting guests and hosts; its products include stays, experiences, host tools, guest booking, trust and safety, payments, and reviews.

Airbnb wants to understand whether its Guest App has strong product-market fit among luxury travelers: guests who have high expectations for quality, service, trust, convenience, and differentiated stays or experiences. This segment may compare Airbnb not only with other vacation rental platforms, but also with premium hotels, travel advisors, and full-service booking experiences.

In this interview, you are being asked to define how product-market fit should be measured for this specific segment, not to redesign the product. Focus on what signals would indicate that luxury travelers are finding Airbnb valuable, choosing it repeatedly, trusting it for high-stakes trips, and preferring it over alternatives despite higher expectations and potential service risks.

Your answer should make clear which users and trips are in scope, how you would define the measurement population, and how the metrics would help Airbnb decide whether to invest further in luxury guest experiences, supply quality, merchandising, support, or other parts of the marketplace.

The experience should consider:

- How to define “luxury traveler” and the denominator for measurement, such as spend level, property type, trip purpose, frequency, geography, or intent.

- Core product-market fit metrics across acquisition, search, booking, trip completion, satisfaction, repeat usage, and retention.

- Whether guests are substituting Airbnb for premium hotels or other luxury travel options, and how preference or share of wallet could be measured.

- Instrumentation needed across the Guest App journey, including search filters, listing views, wishlists, booking attempts, cancellations, support contacts, reviews, and post-trip feedback.

- Cohorts to compare, such as first-time luxury guests versus repeat guests, domestic versus international trips, family versus couple travel, and high-value markets.

- Quality and trust guardrails, including accuracy of listings, host responsiveness, safety incidents, refunds, disputes, cancellations, and support resolution.

- Marketplace health considerations, including whether demand from luxury travelers is matched with sufficient high-quality supply and host reliability.

- How the metric framework would support decisions over time rather than just report vanity growth.

The goal is to propose a clear, actionable measurement framework that would help Airbnb determine whether the Guest App is genuinely meeting the needs of luxury travelers and whether the segment shows durable, defensible product-market fit.