NL100: Set of A's, Did I play bad?

[TheJokerIsWild]

I don't have much info on the villian in this hand. Is this an easy fold on the river? Did I misplay the turn?

Absolute Poker
No Limit Holdem Ring game
Blinds: $0.50/$1
5 players
Converter

Stack sizes:
UTG: $200
CO: $195
Hero: $292.80
SB: $201.47
BB: $128.10

Pre-flop: (5 players) Hero is Button with A[img]/images/graemlins/club.gif[/img] A[img]/images/graemlins/spade.gif[/img]
2 folds, <font color="#cc0000">Hero raises to $4</font>, SB calls, BB calls.

Flop: A[img]/images/graemlins/diamond.gif[/img] 5[img]/images/graemlins/heart.gif[/img] 2[img]/images/graemlins/diamond.gif[/img] ($12, 3 players)
SB checks, BB checks, <font color="#cc0000">Hero bets $10</font>, SB folds, BB calls.

Turn: 3[img]/images/graemlins/heart.gif[/img] ($32, 2 players)
<font color="#cc0000">BB bets $26</font>, Hero calls.

River: K[img]/images/graemlins/heart.gif[/img] ($84, 2 players)
<font color="#cc0000">BB is all-in $106.1</font>,