Esplanade Marina is a new one on me. Ask a local about how to find the passage from Marco River to Smokehouse Bay. While well marked, trying to find this passage for the first time is challenging.

Subject: Marco Island
Cruising News: I'm happy to report a very nice experience last weekend in Smokehouse Bay on Marco Island.  There was plenty of depth on the passage in from the Marco River, several sailboats were anchored in the bay and we had a wonderful stay at the Esplanade Marina.  There is a Winn Dixie across the street and restaurants everywhere.  There is even a public dock that is opened to dinghies.  A short cruise around the bay showed depths consistently around 14 feet.  The people working at the marina were wonderful and the facilities are first rate.  I recommend you drop the hook there as long as the State does not allow the draconian anchoring ordinance ordinance to be reinstated.  If they allow it, then visit the marina.
Bill Foster

And, here's an excellent report concerning the same facility, submitted by our regular Western Florida correspondent, Captain Gary Riss.

ESPLANADE MARINA
Captain Bill Foster has found Marco Island’s best kept secret.  Esplanade Marina is located in Smokehouse Bay which was the scene of the famous anchoring incident that started all the anchoring controversy for Marco Island.
Smokehouse Bay usually has a number of boats at anchor.  The holding is generally good and it is protected from adverse winds.  The marina has public docks for access to the many shore side facilities.
Esplanade Marina is a 72 slip facility of condo docks that many owners rent out on a transient or longer term basis.  The docks are floating concrete with water and power. The marina can accommodate boats up to 70’ or more. Dock master Larry and his assistant Bill will answer your call on VHF channel 16 or by phone.  Reservations are encouraged, especially during season.  There is a boater’s lounge with showers and laundry facilities.
In addition to the nearby grocery, there are three restaurants on site with a wide variety of menu items and prices.  The first mates will find a number of shops to satisfy their need to shop.
The channel off the Marco River is well marked.  As you approach from the Gulf side, take the first turn to starboard.  If the tide is running, you may need a little power to make the turn as the current can be strong.  Favor the docks on your port as there is plenty of water.  The remainder of the way to the Esplanade is a great ride among the mangroves and the many canal side residences.
Now that the secret is out, plan a stop at the Esplanade on your next cruise on the Southwest Coast.
Gary Riss
M/V Far From Normal