Jewel in East Europe!
Maybe you could have other opinions but I think Prague is so beautiful! I have stayed one week in here, but I didn't felt bored at all.
Some Czechs whom I have met on my way from the Castle complained that much of the houses in Prague are now possed by foreigners and especially Germans. I could understand their feelings about it. However, I think that happend just because Prague is so beautiful!!! Who wouldn't want to have a nice holiday house in such a beautiful city?
I think Prague reserved and cared its heritages really well. And most of main attractions are pretty close to each other. So, try to walk around the city. You can meet the unexpected beautiful buildings and alleys such as this one you can see in the photo.
And if you don't have much time in Prague, start your journey at the Charles Bridge. Besides the fact that it is beautiful, there are many happenings! You can see many performances and even at night you can meet many people hanging in there.