We sailed on the Prima in 11/2022, also in an HE, on a western Caribbean itinerary. Loved the ship and thought the Haven was beautiful and an incredible experience. (Our first time staying in it and we can't go back to gen pop.)
My only quibble is that other than very early in the morning, the balcony was never all that peaceful. There was always some noise from the pool and sundeck on deck 8. Never excessive, but also never quiet. Would love to know if you find it to be the same.