We flew from Vancouver through Dallas, flying first class for the first time on the international portion... That was a blessing, as the flight is long, and flat beds made a big difference to our ability to be chipper once we arrived in Buenos aires.
Our stay at the Serena was perfect. It is not in the busy commercial district, but rather in the district where embassies and upper middle class people live. It is a lovely boutique hotel, with a wonderful wine cave. The staff was very friendly and helpful. I had arranged for a pick up from the airport by the hotel. They were on time and friendly. The cab ride to the cruise terminal was at the most 10 minutes and cost us the equivalent of five dollars. The hotel is helpful in giving good currency exchange.
The embarkation was smooth, with suites having a separate stream. We embarked at 11:30am and our suite was ready.
Good cabin. Spacious. The boat is not new so the fixtures are a little bit worn out.