if anyone is interested in a triple village at spawn seed that has diamonds and enough obsidian to go to the nether as well as librarians that offer fortune 3, knock back 2, infinity I, and more. You have to make it in classic and then change it to large in order for the third village to spawn.
The fortress to the end is not very impressive ;( let :me know if you find anything if you use the seed.
go to the bottom of the stair, go through the door, hang a right face the wall. Now knock out the wall, go all the way to the end, you will see a stairs to your left take those all the way down should lead you right to it.
End Portal Room: X: 18, Y: 14, Z: 79
Did the ender eyes lead you straight to it, or did you have to explore to find it? I'm just curious because I'm having a similar problem in my world.
I went into creative mode, used ender eyes. (but ill be honest was a little weird on how they worked)
But found the strong hold, Then searched it and came across the Ender Portal room, I then went back into my survival map and went to location and dug down, and there it was.