Ask for review during online check-out
Upon completing the MEWS online check-out process have the final screen asking guests to review their stay on a website such as google review or tripadvisor .
Claas Normann Mäder commented
Check out Customer Alliance as a thirs party software heloing you with that. We used it for 3 years now and are more then happy with it. It is in the MEWS APP STORE.