[disko]

ATo is a little thin for me to be calling a 3 bet, you are behind to most of his range (you say he is 12% pfr), but seeing as you did..

on river: i dont mind this. you'll get busted every now and again but the strength of your hand is pretty hidden.

I like the turn check as it induces a bluff

The only thing i dont like about this hand (from your perspective) is the line he takes. He checks two streets and then bets the river. This is nearly always strength to me. Hope you ran into AK/AQ and got called.