From the front of the villa head around the building complex to the right until you get to some cliffs:
Location of the cliffs to find another way into Attre Villa in Broken Flowers in Witcher 3 Wild Hunt.
Drop down and jump over the the ledge:
Jump down to the platform and go up the three ledges ahead to find another way in Attre Villa in Broken Flowers in Witcher 3 Wild Hunt.
Climb up the three ledges ahead to make it into Attre Villa.
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