Stockholm Centralstation to Frihamnen

[Cascade1911]

We, my wife and I, are staying at the Scandic Continental prior to embarking on Royal Caribbeans Serenade in July (2018). We are wondering about options to travel between Stockholm Centralstation and Frihamnen. It looks like we could take a subway to a bus to Frihamnen but doing that with two large and two carry ons is less than appealing. What should a Taxi cost between these two areas and are there any other/ better alternatives?

[Desdichado62]

about 25-30 US Dollars for a taxi.