KK Tough Decision

PokerStars No-Limit Hold'em, $0.05 BB (8 handed) - Poker-Stars Converter Tool from FlopTurnRiver.com

MP2 ($5.88)
CO ($2.23)
Button ($11.92)
SB ($1.75)
BB ($5.50)
UTG ($6.10)
UTG+1 ($11.64)
Hero (MP1) ($5.27)

Preflop: Hero is MP1 with K, K
UTG raises to $0.25, UTG+1 calls $0.25, Hero raises to $1, 5 folds, UTG calls $0.75, UTG+1 calls $0.75

Flop: ($3.07) Q, 2, Q (3 players)
UTG checks, UTG+1 checks, Hero bets $2, UTG calls $2, UTG+1 calls $2

Turn: ($9.07) 7 (3 players)
UTG checks, UTG+1 checks, Hero checks

River: ($9.07) 9 (3 players)
UTG checks, [color=#CC3333]UTG+1 bets $5

Hero????

Total pot: $13.61 | Rake: $0.65

Opp was 39/11 over 100 hands

It's just a tough river decision Because A) I think I'm giving too much value to guys who are gettin' me on the river, and this guy is loose, but B) He seemed relatively straightforward, meaning he'd have probably try to get it on at the flop or at least the turn.

No reason to raise and you're good here too often to fold. Very easy call imo. Your check on the turn and the fact that you're in position means your hand is underrepresented so he doesn't have to have a Q or boat here. If you're giving too much value on the river it's not in spots like this. If he's straightforward I'd say he has like 9hXh or 7hXh enough to make this a profitable call.