outdoor\indoor garden

Briefing

i have an outdoor area that i would like to turn it into internal garden with most space optimization solutions as it is narrow corridor where it can look spacious, get suggestion for optimized furniture ideas to get a seating area and wall decoration
the space should be accessible from three doors (one that is from the house - two at front and rear area of the garden
since our weather is hot and harsh I am looking for the area to be fully closed to prevent dust and get it air conditioned
The garden should be shaded with a transparent sheets/ doors as well to allow max possible natural lighting

Resources