This view looks from the castle tower back across the river (the Vltava again), towards the main square. There's a newer town surrounding this and the backside of the castle, but it's easy to forget it's there. There's a short brass band concert in the square sometimes (maybe every day, but at least on two of the three days I was around).
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I stayed at Krumlov House Hostel, a short ways to the left of this photo, on a street called Rooseveltova. The official Cesky Krumlov guide calls its architecture "not very remarkable," but it was a nice and friendly hostel. The whole place is non-smoking, and generally quiet. The only downside for me was a room that was partly built into the hillside, and therefore a bit damp.