I was disappointed by Prague. Filled with tourists and badly organized traffic, it was chaotic and unpleasant.
To avoid the atmosphere, it's better to buy a book of the architectural wonders of the city.
Also the food was similar to elsewhere in eastern block, grease and mayonnaise ruled all over.
I only recall one nice even, getting off the metro in Vysehrad, and walking over the bridge to the center. That fifteen minute walk over the valley beyond was beautiful.