hello and welcome
I would suggest that you have a good look at what is on offer and find one that you like and then BOOK IT....I have not been on a city break as such, but my short haul holidays with JY include, Highlights of Tuscany, Austrian Lakes, Poland and the Tatra mountains all these have been excellent. Do much to do and great friends to meet.
I have also been on many long haul tours as well, so if there is anything I can help with just ask.
Cindy