That's the idea, we can't bring a bomb inside the hotel, but we can place one outside (parking lot or so) and make a call, claiming that we placed multiple bombs out- and inside. The hotel security will find the bomb outside and have to assume that the other bombs inside are also real but better hidden --> evakuation.
Only get our hands at the evacuation plans and we will know were Mr. Aki will come out of the hotel. The reason I don't tell this idea in IC is that there is a major drawback, its a bomb threat --> we will be promoted from shadowrunners to terrorists.