A good question.
A local answer.

For a slower neighbourhood morning, compare North Adelaide or the East End with where you are staying. A short walk and a reliable opening time matter more than a ten-year-old 'best breakfast' ranking.

If conversation is the point, choose one bar near dinner and go earlier in the evening. A small room can fill quickly, especially on Friday or Saturday, and a quieter first stop gives you more flexibility.

For a Sunday drive, a Hills pub can make the meal part of the outing. Choose the route before choosing the table, reserve if necessary, and have a sober driver for the return trip.

A neighbourhood hotel can be as useful as a destination restaurant for an easy dinner. Check recent menus, kitchen hours and reservations directly with the venue; a forum recommendation from last year cannot tell you what is on offer tonight.