The area is part of Bloemendaal and from what I saw, it has many near-palatial residential buildings, winding brick roads and lovely tall trees.
The specific hill has it's own name, "'t kopje van bloemendaal", and a pannenkoeken restaurant on the top (as every decent hill should).
And incidentally, while looking for the directions to the hilltop on the internet, I found a number of great cycling routes and sites, but my favorite is this one: http://heuvelsfietsen.nl/ A specialized site for hill lovers who ride in the Netherlands!
They rate the route I took up the hill as a 21 kip difficulty. Being unfamiliar with this system of measurement, I'm going just imagine that kip translates to chicken, like on a menu- and it's not an acronym for anything else.
So my effort was 21 chickens, and if I'd approached from the other way, it could have been 29 chickens! For comparison, some of the hills that I attempted in Limburg on my brompton vouwfiets were over 50 chickens! And maybe that's why I couldn't do them. I'm a 30 chickens or less gal.
Good to know.
It's a fun ride! Do it. Pannenkoeken. (Call first- Apparently they think posting their hours on a printout taped to their roadside sign, without updating their website is acceptable.)