You won't have any problems aside from fitting some plugs. The Westin has sockets that will fit both US and European style plugs at the same time, no problem.

Provided you don't plan on taking your laptop into the bathtub I don't forsee any issues with 2 prong vs 3 prong. The third prong is supposed to be tied directly to earth ground and also to the case of devices that might expose you to electrical shock. Since most power adapters are all plastic, you won't stand any risk.