Is that a maisonette?
Nope, a maisonette is like a flat with two internal floors, in a bigger building.
Our place is four seperate homes, each with an external (own) door but inside it's all one level.
It's got 85m^2, so for a first home (at 24 y/o) I'm happy with it. Not something for life. Ideally I'll end up in a detached house, secure area with double/triple garage.