What size value bet on the river for flopped house?

[erocplayer]

PokerStars No-Limit Hold'em Tourney, Big Blind is t30 (8 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

UTG+1 (t2015)
MP1 (t1395)
MP2 (t760)
Hero (t1375)
Button (t1310)
SB (t5715)
BB (t875)
UTG (t1485)

Preflop: Hero is CO with K[img]/images/graemlins/spade.gif[/img], T[img]/images/graemlins/spade.gif[/img].
<font color="#666666">1 fold</font>, UTG+1 calls t30, MP1 calls t30, <font color="#666666">1 fold</font>, Hero calls t30, <font color="#666666">1 fold</font>, SB completes, <font color="#666666">1 fold</font>.

Flop: (t150) T[img]/images/graemlins/diamond.gif[/img], T[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, UTG+1 checks, MP1 checks, Hero checks.

Turn: (t150) A[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, UTG+1 checks, <font color="#CC3333">MP1 bets t90</font>, <font color="#CC3333">Hero raises to t240</font>, SB folds, UTG+1 folds, MP1 calls t150.

River: (t630) 3[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
MP1 checks, Hero does what?

-eroc