I visited Hallstatt this year, actually, in January. Absolutely a gorgeous little town, but they ask insane money for every move. None of us liked that. Only one parking lot in the town, and they charge something like 20€ per hour for parking. No toilets to go, unless you pay 2Eur to take a leak.
We ended up spending 45 minutes in the town and then left to eat somewhere else. Otherwise beautiful, got some great photos as well.