Some great suggestions but for me personally European City Breaks with JY dont appeal due to Cost and getting to London for what is only a 3 night break.
I tend to use my Avios points to do City breaks an in recent years I've done Budapest, Lisbon & Barcelona, have also just booked Berlin for August this year. I tend to go for 5 night breaks (Thurs to Tues) doing this way.
I appreciate others prefer to go with a group, like i do with longer holidays but as an experieced traveller i actually enjoy planning my own city break and working out the local transport systems.
Need to save my pennies for the other holidays I do with JY, got a couple of biggies this year.
Talking Cities one trip that would interest me would be to do all 3 Baltic capitals on one trip (2/3 nights in each). Riga, Tallin & Villinus are places I'd like to visit.
Mick