The ability for us as an agency, with many different clients in our portfolio of brands across multiple countries who work together daily via this software platform (Campaign Hub), is simply unbeatable! We are able to easily collaborate internally using shared documents within one workspace - all without having individual account managers or access levels set up amongst each other's client accounts / projects etc..
There really isn't anything I dislike about working through CW; it has been so easy & seamless that we have literally not even thought much at how amazing they make things look from afar by implementing their cloud-based system into ours!!