Zao and Kazzordoon: it is necessary to travel by steamboat, so I would rule out these 2.
Femor Hills: there are no boats very close, so no.
Svargrond: the carpet is a little far from the boat, not the best option.
Issavi: the carpet is on the other side of the city, which will probably make it take longer for you to get to it.
Edron: it is necessary to climb several stairs, which ends up taking a little more time. I would say it is a good option, but not the best.
Darashia: the carpet is near the boat. In my opinion, it is the best option, the fastest. If you want to avoid getting on the Ghost Ship, you can go by boat to Darashia via one of the following cities: Ankrahmun, Gray Island, Liberty Bay, Port Hope, Yalahar, Krailos or Issavi.