We highly recommend staying at Caroline's place. It is a very nice host, and the apartment is spatious, comfortable and beautiful, with a spendid view to the water, in a quiet neighborhood. The subway station is at abt 5-minutes walk, as well as the Donau Zentrum shopping center (for the shopping lovers :) ). A supermarket is just across the street, as well as the bus connection to the airport. A good choice for an excellent vacation! She is a very nice host!