As soon as you have worked out what kind of furniture you want to include in your outdoor space and which hard-wearing materials to focus on, the ideal would be to give your open-air living room a theme, so that all the accessories are in harmony with each other and make sense.
If all the interiors of your home have a specific, very obvious and distinctive theme (e.g. minimal, vintage, ethnic, Nordic, ...), you can think about reproducing the same style outside, for uniformity. If, on the other hand, you prefer to vary, we suggest you choose a theme that blends well with the outdoors and its context.
For example, if your home is in the mountains, you could go for a mountain decor, if it is in a maritime area you could go for a more marine theme, such as Mediterranean.
If you are in the city, you could use a more industrial, contemporary style.
The important thing, however, is to choose a theme and develop it with consistency and awareness: you will see how your exterior will be transformed into a cozy, beautiful to view and pleasant to live in!