I’d use the common approach for five-sided “holes”. Build a single span degree 5 surface 1. Then build surface 2 with as few spans as possibly possible, and match it on the blue edge to surface 1 with the “OnSurface” option.
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In your examples you also split the multi-span surfaces into multiple Bezier ones. This is the preferred approach if the model will be exported as IGES or STEP file for use with a parametric CAD program. They tend to split certain surfaces into unwanted polysurfaces, because they can’t handle some multi-span surfaces as a single surface.
It should be noted that some CAD programs do the aforementioned process automatically after the model is exported from Rhino and then imported into the other program. I had bad experience with Solidworks, which sometimes split random multi-span surfaces into an absurd amount of surfaces, despite that it “looks” unnecessary.
Solidworks and a few other CAD programs also split true cylinders into 4 pieces divided every 90 degrees.
Even Rhino splits the cylinders into 4 quads sometimes.
A little exercise file for beginners, where one can practice single-span construction and CP manipulation.
NURBS exercise five sides.3dm (2.1 MB)
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@Lagom this corner is not very beginner friendly 
I can argue that exploring possible solutions for tiny imperfections like this one is the perfect opportunity for the beginners to become professionals.
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I would not give such puzzles to novices, but beginners almost always get the principle, which is the whole idea.