Some years ago there were Orcas in Tysfjord. Today, there are none. The Orcas moved North to Andenes and beyond. So there is no reason to go to Tysfjord. They still offer Orca tours, but they will just transfer you to Andenes. So you need to travel a long distance without any reason. Also, they cheat a bit with the prices! Hard negotiations afterwards, etc.
So you should book there directly with Lofoten Oppleveser or Seasafari Andenes. Alternatively, check Pico Sport on the Acores or Wirodive, as they offer Orca camps and liveaboards in Northern Norway for Orca snorkeling.
Besides, if you are passing Tysfjord, the hotel is ok (neither especially good or bad).