M0nica
I want to agree with Aveline. It doesn't matter where you live, it is you that makes it friendly or not.
Except, I am remembering a friend, the sort of person who could find enough people to have a party with in an uninhabited desert. She went to live in Hull and was profoundly unhappy there as she found it almost impossible to make friends as she kept being rejected because she was a southerner - she wasn't, she was Irish, but her previous job had been in the south. She died prematurely 5 years after she moved there. She could not afford to move away from Hull. I am sure her death was hastened by her loneliness. I have not believed in northerners being friendly ever since.
I think it is both, Monica. And my Scottish friends all say Edinburgh is like the South- different to rest of Scotland, atmospherewise, and a bit too posh to be friendly to outsiders.
When I lived in London and Surrey, and went for walks, I'd always say hello to those I met, and they looked at me as though I was mad! Whereas when I discovered the Peak District and other parts of the Midlands, people smiled and responded. It felt nice.