Greenwich
The place of the zero Meridian. University, observatory and a campus.
Greenwich may have started up as a suitably remote place to relocate the inconveniently curious bearded people and their disciples (sometimes also called "students") but today it's a conveniently close place to live in.
Let's keep out of the northern tip of the Greenwich peninsula. There is nothing of interest there, for families, that is. The stem of the peninsula, near the observatory on the other hand gives off a satisfying air of family-friendlyness. While we know there is a university, there may be less property devoted to those still learning their first steps. Local pubs are genuinely cozy. Perhaps the most welcoming so far I've come across.
The nearest match in Finland might be Viaborg fort ("Suomenlinna").
Btw: the strip towards the nort of the peninsula may not be a safe place to be. But then again, it's not technically Greenwich anymore - it's Morden. Astute.