The ferries have sunk from time to time in the past. There used to be a helicopter service but I am not sure if after the last accident there still is. If it is a Russian made heli take a cab.
The Lungi hotel is the only place to stay and is awful. Cold shower, crap food but they do have cold beer.
I last stayed there when Tony Blair and his Mrs were visiting. It was bad enough before they had deposited themselves.
Nice people though generally in Freetown.
Kind regards
Exeng