It was great for our first European trip. We weren’t impressed with the Ibis hotel chain that we stayed in as some had very small rooms to open our luggage in.
Wonderful trip! I strongly recommend several of the Optional Experiences to make the most of your time, including the sunset boat trip in Paris (you see the Eiffel Tower aglow!), walking tour of Hidden Venice, and walking tour of the Colosseum in Rome.
Be prepared to walk a lot (I hit 10-14k steps most days!) Be prepared for early mornings.