Let's assume $150 effective stacks and that villain is an unknown.
Hero has JJ on the button facing a $8 preflop raise. That seems a bit small for a typical game but perhaps not here (this type of table specific information helps get better responses). There is merit to making a reraise here, though if you do its going to be hard not to be pot committed. Flatting in possition also has merit. I think Hero could take either route and play the hand effectively. The looser the villain, the more inclined I would be to three bet.
Hero flops top set on a semi-wet two-tone board. Villain checks. This is a good clue villain doesn't have an overpair or top pair and its almost certainly confirmed when villain flats Hero's flop bet. Not knowing villain's nature its hard to say if he would take a weak-passive line with the nut flush draw plus one or two overcards. Vs an unknown, I discount Ax of spades a little due to his passive line but I'm mindful that some folks like to play passive and trap with the nut draws even if I wouldn't do it myself.
Hero has $142 left (or less) at the flop facing a $24 pot. That is a bit troublesome, too much for an easy two step betting sequence. I think Hero might be better served with a pot-sized $25 flop bet rather than a $16 bet. Perhaps Villain will check raise and make the hand easy for Hero.
The turn is an unhappy third spade. $56 in the pot. Villain checks and Hero bets $30. Its a useful clue when villain looks back at his hand, though not certain. Villain again takes the passive line and just calls.
The river is a cursed fourth spade. Now Hero only has a bluff catcher and suddenly Villain wakes up and pushes. There is $116 in the pot plus the $90 river bet from villain, Hero needs to risk $90 to win $206. Villain needs to be caught bluffing (with no spade rather than a weak one) 30% of the time for Hero to break even on the final call. Given how the hand played out, Hero needs to fold. Villain had four earlier chances to bluff and declined. I don't expect to see a bluff at the river.
I'd range villain as Ax of spades A
+ offsuit broadway, any two broadway with one spade, maybe an underpair with a spade. I can't put villain on any hand that flopped top pair + based on his passive line for the flop and turn. Its worth noting that villain can be bluffing with the best hand here - Say villain has T
T
for example.
If Hero is betting the turn, it needs to be more than 1/2 pot sized.
DrStrange