We stayed at this hotel for 3 nights, the hotel is almost new, great rooms. The parking is aside the Dolphin Mall hotel so there is unlimited parking space. The staff was very nice.
The lobby is great, the free Wi-Fi has great throughput.
I have 2 cons:
1. two nights in a row I wanted to buy a bottle of water and they weren't cold but I had ice from the ice machine so no big deal.
2. In other courtyards you have a complimentary gift from the store not in this.
BTW, I think it could be great from marketing perspective to add $10 or $15 to the room rate and offer free breakfast as many other Marriot hotels around the globe. There is a Starbucks open since 5:30 am in the 19th Street (like 2 or 3 minutes driving).
We left from there to Orlando and as the hotel is very close to Turnpike you could be on the road in 2 minutes. So it is great for lot of people from Latin America that want to start their trip in Miami and then move to the amusement parks area in Orlando.
The hotel is in the route for airplanes landing in the MIA Airport so be prepared about the airplanes noises in the night, but for me it wasn't big deal