This is what the Lonely Planet Guide has to say about Kazimierz:
Set on the bank of the Vistula in a narrow valley at the foot of wooded hills, Kazimierz Dolny is a small, picturesque town with much charm and atmosphere. For many years Kazimierz has attracted artists and intellectuals, and the place has a pleasantly bohemian flavour.
StayPoland has some interesting information about Kazimierz and a very similar view of the place:
Scenically located on the bank of the River Vistula and encircled by low wooded hills, Kazimierz Dolny offers an impressive number of historic sights for such a tiny town. These, together with charming views of the river, the profusion of greenery, steep-sided gullies, fresh air and quaint tenement houses, contribute to the beauty of Kazimierz Dolny. For many years the town has been a magnet for artists, writers, architects and journalists seeking a unique and creativity-enhancing atmosphere.