My wife and I spent our 10 year aniversary at Tiamo for 9 days. The weather was bad and rained everyday. Also, the surrounding area is quiet. The shopping in Port Antonio is not really up to par, but that is not why you should go to Port Antonio. You go for the quiet.
The grounds of the resort are to say the least amazing. We stayed in the Royal Palm Villa, which is very nicely appointed. I'd say about 4 stars, but 5 stars for Jamaica. The staff were very attentive. Everybody was always asking if we needed anything, etc.
In short, if you are looking for the real Jamaica, go to Port Antonio. You will meet people and see how they really live. I did not see any crime. However, Tiamo is way nicer than anything else in the town. I recommend anyone check it out.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.