Costa Rica June honeymoon location recs?

We’re planning on going to Costa Rica for our honeymoon. We want a nice beach, romantic-vibe, activities maybe involving hiking/forest, waterfalls, ATVs, etc. Not crowded. Maybe tropical-ish.

One I saw recommended a lot for a honeymoon-vibe is Nayara Springs/Arenal Volcano but looks like it isn’t near any beaches.

Another one near a beach I’ve seen good things about is Manuel Antonio. Does it have everything we want in that area?

Thanks in advance!