I am having trouble navigating what appear to be two different water bus lines in Venice-- the ACTV and the Alilaguna (service to and from the airport). My husband and I will be arriving at about 9 pm on a Saturday night to Marco Polo airport and I am trying to choose between two hotels, one that is near the Fundamente Nove water bus stop and one near the San Marco bus stop. According to what (I think) I've found, the water bus ride on Alilaguna would be 30 minutes to the former and an hour and 20 minutes to the latter-- and it is not possible to take ACTV from the airport without transferring. Is that correct? Is it really such a long ride from the airport to San Marco?