https://www.expedia.at/ is an online travel ageny like booking.com. This portal also has a review section. It would be very helpful when the reviews could be display by a widget.
Hey there and welcome to the Community, @Eduard_Bugelnig 
I am happy to say that you can easily display reviews from Expedia using our All-in-One Reviews widget:
Try it out and let us know if it worked for you 