If you narrow that down a little re: what you are interested in doing, CR Golfer lives up that way and he'll steer you right, but as is, your inquiry is very broad for a very broad area of CR.
Nevertheless, we all try to help new guys who ask legit q's--and not like 3 week old nube Greybeard who later admits posting a fake fact pattern post "to stir stuff up" which asked the board: "is my young massage parlor $20 whore who I met once really serious when she tells me she doesn't want my old phucking ass phucking any of the others or she'll cut my dick off--is she jealous?--I want to see her after hours?".
I hope he's done here. Especially after he has since admitted this was a fraudulent post and then has since posted he knows all the MP's/whore houses in David, Panama and how to play them.
Many guys wasted alot of time with that idiot's post on CRT despite the obvious answer--Duh, ya she loves you, she met you once, fell in love, she is very jealous, wants only you. But a few good CRT guys fell for his bullshit and spent alot of time advising him be careful, she's probably playing you

---I think they felt sorry for him thinking he was truly that clueless--why else respond to that idiocy--it had to be pure pity.
And then after he admitted he was jagging us, another nube said forget the fraud, that it was a legit "rudimentary" (which means 'basic' in english) q for nubes--fuck, a virgin 15 year old boy still with acne could figure the answer to that fact pattern. Jesus H. Christ. Trying to create the exception so as to allow fake bullshit posts because in the 2nd nubes mind other nubes couldn't figure that out or would be interested? Adult nubes couldn't figure out the answer to that bullshit fact pattern in 10 seconds on their own or after 48 hours in CR? Seriously? No wonder guys say Phuck CRT. The point is we get sucked in by nubes early posts so nobody that will give you a decent answer wants to respond to nubes early posts's.
Anyway, not to let it go unmentioned, GREYBEARD'S POSTS ARE NOT WORTHY OF A RESPONSE unless you like being played "to stir things up on the board", a board on which he just registered 3 weeks ago as an unpaid member.
So assuming your legit as I believe and worthy of a considered response, I think it is fair to say that in CR's North Pacific the beach towns/areas are the highlight for most tourists. Many are there on some package air/hotel deal via the newer Liberia Int'l Airport.
But off the beach it is mainly an agricultural province with emphasis on cattle. If beaches ain't it for you, like maybe you want to find Mel Brooks estate, I can't help you. But, beautiful beaches, unreal views with the mountains in spots, very tranquil, very common to see cowboys driving a small herd down the highway, or a poor guy hauling whatever he's hauling with a mule hooked to a cart. But then you go 4 miles further and 2 miles west off the road and there will be a gazzilion dollar resort on a beach. Changing area, an int'l airport right there in Liberia will do that. But really the main attraction are the beaches. The few populous beach towns like Coco (no thanks but getting better) or Flamingo, nice, but kind of too quiet are mixed in with a bouch of smaller enclaves. Just look at the map. Don't get hurt or really sick the further south in Guanacaste that you go. You are a long way, time wise, from medical attention.
If CR Golfer doesn't see this thread, send him a PM w/ what you're wanting to do, or re-post with your wants listed, enuf CRT guys know that province pretty well, + or -, especially a couple of guys on board who run transportation services from SJ to all over CR, namely Puravidatransport and OneLuckyDog. They probably know every pothole, and every shit hole place to avoid. You should PM those two guys also for suggestions once you give them a clue of what you're looking to do, and they can probably make it a sweet deal for you.
I can tell you this, not alot of P4P in Guanacaste, if pu*sy is what you want, it's generally a BYO area other then luck or a few so-so or worse joints from the Nica border down to the next border of the neighboring CR province, Puntarenes, from there only maybe an hour + to Jaco, aka P4P on the beach heaven.
But, back to Guanacaste in Feb, it's is going to be very,very hot and dry. Browned out foliage in many areas. Parts are in a drought already and one popular tourist town's well could not keep up so they ran out of water temporarily a few days ago, both as reported in CR papers.
The Central Pacific (Jaco to Dominical on down) doesn't get that dry and stays green. And as mentioned there's great P4P in Jaco, with some negatives, but Jaco is the best you're going to get on the coast P4P wise if you are looking for whores and the beach.
Anyway, if you want help from dopes like me, you need to post the specific range of things you imagine are available in the NW Pacific.