This is the only way to not only scale but to provide a GREAT guest experience and build your direct bookings. I strongly suggest the use of OR to everyone I interact with as my success is ties to it.
This is a Swiss Army knife, the most COMPLETE knife as it has everything one needs to excel in short term rentals all in 1 login.
The UI is a little dated but if you are used to it not a big deal. Many newbies think it looks dated and don't look past the features to give it a chance. It has been around a WHILE, they know what users need and supply functionality over aesthetics.