There is no better way to experience fly fishing in Transylvania than to explore the wild, gin clear freestone streams in the Carpathians. Native wild brown trout on ultralight gear (0-1-2 wts.) and camping in remote areas are the rules of the game.
I like to do two days guided trips or three-four days trips (1-2 fishermen), depending on location, fisherman preference, etc.
If you are not a camp guy such as myself, you are missing out the long nights by the fire and quality time than could be spent on the water instead of driving to accommodations (but of course that can be arranged).