What do you like best?
As a first-time Opera user, it was really easy to figure out. There's also "Are you sure?" type messages that pop up before making a big change to a reservation that might cause issues down the road. In that aspect, it's hard to mess up someone's reservation. It's also cool how you can track virtually everything that each individual does. For instance, you can see who changed what reservation, or who checked in/out each guest.
What do you dislike?
Whenever I have multiple Opera windows open, it tends to run slow and will even crash on me if I have the maximum number of windows open. Sometimes it's helpful to have so many windows open at once because I'm often doing a lot of different things at once, but not so helpful when it crashes right when I'm trying to assist a guest!
Recommendations to others considering the product
What business problems are you solving with the product? What benefits have you realized?
Opera is incredibly easy to use and has tons of features that allow the hotel to run smoothly. You can add notes for the next shift of workers, you can pre-check in people, you can do virtually anything you want within Opera.