Hi all,
So I will be in Amsterdam in December this year for some meetings.
Thereafter, I am planning to make a 4 day trip to another European city which hopefully has milder winter temperatures, beginning on 15 Dec

I have narrowed down to three cities, Rome, Malaga or Nice. Rome is bottom of the list right now, because I have already been there. But is there anything to do in either Nice or Malaga? Havent been to either yet.

But any good suggestions? Appreciate any good tips for where to go in December from all the travel gurus here! Thank you!