Love the Koholint recreation, so my vote goes to Mani Kanina. I'm honestly pleasantly surprised by how nice the spacing ended up being. It doesn't look nearly as stretched as I expected it to be. The only areas that seem sparse are the entrance to the Mysterious Woods and the rooftop of Kanalet castle. Great work here.
Even if my vote went to Mani Kanina, TheRock's dungeon is really cool as well. It looks like a mashup of various other dungeon styles, lending it a very final-dungeon-like vibe.
HoF's map is good too. It almost looks like a dungeon from its structure, but outwardly presents itself as an overworld. My only critique is the lack of ground decoration on the grass (bushes, tall grass, flowers, etc).
Good work here, everyone.