Small flush river spot stars 100nl

[Helen82]

Villain is 15/12/2 has played solid no real reads as of yet. Whats the preferred play on the river here

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

Pre-flop: (5 players) Hero is UTG with 5[img]/images/graemlins/spade.gif[/img] 6[img]/images/graemlins/spade.gif[/img]
<font color="#cc0000">Hero raises to $4</font>, CO folds, Button calls, 2 folds.

Flop: 7[img]/images/graemlins/diamond.gif[/img] 4[img]/images/graemlins/spade.gif[/img] A[img]/images/graemlins/spade.gif[/img] ($9.5, 2 players)
<font color="#cc0000">Hero bets $7</font>, Button calls.

Turn: 9[img]/images/graemlins/diamond.gif[/img] ($23.5, 2 players)
<font color="#cc0000">Hero bets $16</font>, Button calls.

River: 2[img]/images/graemlins/spade.gif[/img] ($55.5, 2 players)
<font color="#cc0000">Hero bets $35</font>, <font color="#cc0000">Button raises all-in $77</font>, Hero calls.

Results:
Final pot: $209.5

[andy7]

I think I'm stacking off here too. I prob bet $18 turn, then $40 into $60 on the river. This is an unlikely/very poor river bluff spot, but given villains stats I'm finding it hard to put him on a hand. Set raises the turn surely? What did he have?