Easy reporting of sales at each location, easy data entry for new properties with no training needed! If you want all your systems in one place this is it - not sure there are any downsides unless maybe some minor things that could be improved like having more specific reports about what rooms where rented or how many people were using them etc? Just use their support team if anything goes wrong they're always very helpful so far I haven't ran into issues yet but i have been using fomr 6 years now still running great.
Our staff can easily log rental requests without needing extra software installed as well we also had an iPad app which made our life much easier since when guests checked out everything was done via touch screen instead typing passwords ect..