Don't feel like writing #reviews on #Tripadvisor & Co.? With #MapComplete, you can write reviews using #MangroveReviews.
Designed to be essentially anonymous unless you are connected to MapComplete with #OpenStreetMaps.
No real account, but Mangrove has a public/private key system to group your reviews with the IP address of each new device/browser.
On MapComplete, editing/deleting is possible, but remember to refresh the page to see the (...) button to do so.