Living in the city, space is at a premium. What you do with that space, can add termendously to your quality of life. The owner of this house obviously wanted to be immersed in the smell and sight of a country garden from the moment they walked out of their house.
The photo may be a little decieving -- It appears the walkway is grown over. That's just because the camera angle obscures it. The walkway is there I assure you -- though it is encroached on a lot by leaning flowers.
While we are all enamoured of lushious, spacious gardens, I think a garden this size does as much if not more.... it keeps us close to nature, even on a short walk to the mailbox.