In 2002 I did a 16 day tour of Western Europe called the European Whirl. It included England, France, Switzerland, Italy(including the Vatican), Austria, Germany, the Netherlands and Belgium. In 2005 I did a twelve day tour of Ireland, including Northern Ireland called the Irish Experience.
The great thing about Trafalgar Tours is that they do everything for you. Your luggage is brought from the coach to your hotel room and from your hotel room to the coach and all tips are included in the price with the exception of the tips for the tour director and coach driver. The hotels have always been great and the director and drivers on both tours were excellent. You will meet people of all nationalities and they have always been friendly, especially the Aussies. I still exchange emails from people I have met on both tours.
The European Whirl was very rigorous because of all the place we went, so having problems sleeping at night was not a problem. I will do it again one day. The Irish Experience was a more leisurely tour and was quite pleasant and would like to do it again.
Also, when you arrive your Tour director will meet you at the airport and you will be transported to the hotel. When the tour is over, the tour director will transport you back to the airport.
You can't go wrong with Trafalgar. You will love it.
Have fun.