Where you stay can sometimes make or break your vacation. It is common for people to look for the nearest and most affordable Hotel in a given city but there is a great alternative, AirBNB (www.airbnb.com).
Historical, Modern, Hip and Multi-Cultural perfectly describes Berlin
It sounds cliche but Paris is absolutely gorgeous and romantic
Interesting architecture, canals and bikes as far as the eye can see
"Paris of the East" offers beautiful architecture and views
Amazing architecture, delicious food...a masterpiece city in Central Europe