We just had a great stay in Copenhagen on Birgit's boat. On arrival Birgit is there to meet you and is extremely helpful with information about getting around on public transport from boat. Very peaceful and you can swim if you are brave. My daughter jumped in and enjoyed it after the shock of the cold water. Boat has everything you need but is about 15-20 mins out of centre so if you want to walk straight out into city then will not be for you. We found Copenhagen cards very useful and good value in end as we used them on bus, harbour bus, trains and museums, theme park etc during our stay. Get Birgit to order you a taxi to and from airport as she will direct them to boat.