That this app is available in so many languages! It's a breeze to use because it speaks your native language as well as English if you have an account with them through one of their partners (like TUI). I like that when someone makes changes there are pop-ups letting me know what changed before my session ends - no more forgetting about those little things after seeing how they're doing something else while we work together without looking over our shoulders constantly reminding us to do these tasks. There isn't anything at all really bad. If you think back from year ago now though; some functions aren’t easy/intuitive enough (this was around 2016) but since then improvements seem great. Make sure not only you can read German, French or Spanish, make sure also people who speak other foreign dialects understand too – otherwise communication might be difficult sometimes even using translations which could slow down progress significantly. We've used many different apps throughout Europe and never had any problems until going mobile ourselves by developing ToursMobile. The interface has improved drastically once moving away from desktop screens towards tablets / mobiles allowing full access to features previously unavailable due to size constraints. I like that it's very user friendly to navigate around which makes finding things easy! The customer service is also great so far as well!! Nothing really at this time but they're working hard towards making improvements with their product in terms of functionality/customer support etcetera. They are constantly improving upon there products by adding new features such us booking tours online through your website via mobile devices (iPad).