6 feet according to this website http://www.thehighdefinitionstore.com/TV-Viewing-Distance-s/79.htm

you could always use any glass top table with steel frame and put a matt finished steel tray arranged with some metallic miniatures or candle stand or spray paint some wooden table with metallic paint and give an oxidised look.

Not completely......the side sofa can extend till the centre of two doors and then the lower table comes, still allowing a generous space of one side sliding door opening to outwards....the doors can slide anyways which is majorly for viewing purpose and do you really need that large excess to opening...i was just curious....the glass door looks like 5 feet so you will be left with 3 feet of opening that is equal to any generous door size.....is there any major use of balcony except for vegetation and small gatherings which could still happen with the 3 feet opening........

Hi Mate, You can utilise that place as bar counter or multipurpose way counter . If you like you can use pictures on wall with effective light combination. Regards, TASKO Team Hyderabad, India