I didnt stay at this hotel, my rating are for their mojito cart that I went to. I was told by a friend to look for the guy in the mojito cart in front of the westin because his mojitos were the best. And she wasn't lying. Hands down best mojito I've ever had. If I ever return to key west ill have to stay at the westin just to be near mr mojitos cart!

I will start off by saying even if you prefer westin resorts do not book on westin site, the room is not worth it! We used Priceline and think that we over payed for what the "resort" offers.
We wanted to take the boat over to the other westin resort since the pool area had wet cushions from the rain the night before and were told it was 20 dollars a person! Keep in mind this is on top of a high resort fee here, insane!
Although the manager I other responses has noted the building rooms were renovated 3 years ago again and again, they are just not as nice as the other westin resorts. There are no tubs, the water pressure is awful, the towels were dirty, they have old school ac units and the Check in desk and lobby area are not in the main building. The staff seems angry and unhappy to be working here.
Positive is location. I would say it is worth 150 a night max! Also if you have points it is not worth it!

Stayed at the Westin two weeks ago. It was a first visit to the Florida Keys and this hotel was superb . My wife and I stayed in the annexe with an ocean view. The view from the balcony was excellent. It overlooked a small Marina, boardwalk and cruise terminal. The hotel itself was first class. Everything from cleanliness,facilities, helpful staff, sunset bar and restaurant was faultless. Would definitely return and recommend to anyone. The hotel is perfectly located to the resort of Key West. Plenty of shops , cafe's , bars etc.

We made a spur of the moment decision to head to Key West for a few days and had little time to find a two room suite. We made the reservations and then checked the reviews on tripadvisor and then regretted making non cancelable reservations.

We went anyway and fortunately the Westin Marina was not as described in many of the prior reviews. Our suite was in the checkin building not the marina building. The rooms, while not over large, were decent size. Each bedroom had a very nice bath with Jacuzzi. Each bedroom and the living room had a balcony overlooking the ocean with a sunset view. No cruise ships were in port during our stay, which is unusual.

The folks in the hotel were friendly and helpful. We had dinner one night on Sunset Key at the Westin. It was very reasonably priced and very good. The view is spectacular.

We would stay here again.