No-name harbor lies on the southwesterly tip of Key Biscayne, just north of Cape Florida, and is part of the Florida State Park of the same name. The crew of the “Sorry Dawg” does a good job of describing what this anchorage has to offer below.

Visitors are allowed to anchor overnight in No Name Harbor for a fee of $20.00 per boat per night. Mooring to the seawall overnight is not permitted. During operating hours, visitors who have paid the overnight fee have access to coin operated laundry machines and a rinse shower. We also have a free pump out for all boats, a picnic shelter and restrooms. Boater’s Grill is open for breakfast, lunch and dinner. Visitors arriving by boat but not anchoring overnight must pay a $2.00 entrance fee. The entrance fee and anchoring fee are both collected by honor system.

http://www.floridastateparks.org/capeflorida/activities.cfm#10

This is a nice harbor during the week but is mobbed on the weekend, tons of weekend boaters all around the area.
You can also climb the Cape Florida Lighthouse while you are there during regularly scheduled tours. However, I do not think there are water hookups at the wall. You can call them and inquire,
Bill Baggs State Park @ (305) 361-5811
Incidentally, there is a restaurant right there in No Name Harbor that has good Cuban food.
Sorry Dawg

Click Here To View the Cruisers’ Net’s Eastern Florida/Florida Keys Directory Listing For No-Name Harbor

Click Here To Open A Chart View Window, Zoomed To the Location of No-Name Harbor