It's a pity I didn't go to Prague last year. C. and I were going to, but we generally plan these sorts of trips rather last minutely - like the week before we leave. Consequently, August airplane fares were higher than we'd expected and we couldn't find any hotel space after the first many tries. So we gave up and had a lovely trip to Vienna and the Wachau instead.
The Old Town of Prague hasn't flooded yet...but it's looking very, very close. (more here)