The impact of the sharing economy business model continues to grow at a remarkable rate in many sectors. Consumers need to deal with independent service providers (e.g., Airbnb) and not commercial businesses (e.g., hotel chains). We are exploring scientific facts about product quality based on user-generated ratings. We compared Airbnb place ratings with TripAdvisor and analysed why these ratings in the sharing economy platform are so high. Our analysis showed more than 285 properties holding an average user-generated rating score of 5 stars. This directed us to analyse where the review platforms generate doubtful distributions of star ratings, which are questionable reflections of true service quality. In addition, we found considerable variability in ratings. This discrepancy made us question how these distributions occur in the sharing economy, particularly in home-sharing tourism, where rating variability is small compared to that in the traditional hotel industry.