Unlikely. How many hotels have you stayed in where the egress strategy is "out the window"?As there are access doors on those levels I'd rather think they are for evacuation. My uneducated guess would be that (if the round windows can be opened in an emergency situation) the height of the lower levels would be sufficient to get away with "minor" injuries when dropping one down. Above a certain height that drop would be considered fatal and a proper escape route would be required.
If there is a ledge there permanently it's for access/cleaning/maintenance (hence also the doors), and I'm guessing it will have a man-safe type system. The barriers that are currently there are temporary only.
I'm more than happy to be corrected when the final thing comes through, but I'll be very surprised.