Privacy could be obtained with a screen, placement of potted plants, an open bookcase, but I like your idea for a curved track with a curtain as one option for visual privacy. I would rotate the dining table 90 degrees and move it towards the balcony. I would remove those two chairs/tables because the layout of a single chair that far apart from another chair does not work. You may need to move the seating away from the main entrance because it looks like you walk in and you're on top of a loveseat. In such a tight space with so many doors that open in to the main living/dining - my advice is to keep it simple. Scale the furniture properly and have pieces that are multi-functional. Example- an ottoman that can serve as seating. A bench at the dining table to seat 3 on each side. I would also place two smaller loveseats facing each other in front of the fireplace. This will give you an "entry area" (along the back side of the kitchen wall) and help to define the living from dining rooms. Even if you don't have a formal entry, try to create a bit of space to welcome people.

Have you browsed the dining room photos on Houzz? If you type in the search box 'round table', you'll get lots of examples. You can also do a search under 'browse rooms', 'dining' and then choose dining tables. I think that round tables look 'friendlier' than square tables.

You might consider also the space a round table has compared to a rectangular one. Usually, the round table of a 5 ft. diameter will not have a lot of room for 6 people to sit. It will be a little snug. Serving dishes will need to fit on the center of the table or off of the table. The rectangular table would offer more spacious seating for 6. Is it too large for your room? What are the dimensions of your dining room? (x ft. by y ft) As to your color palette, the contrast of black with other white furniture is interesting. Also, the green with the black and white could be quite unifying.

It posted! So it looks like you might have enough room for a small sofa. Here is a small curved sectional that could work in this space. You could add two chairs facing the sofa as well: http://www.wayfair.com/Piedmont-Furniture-Lucy-2-Piece-Sectional-DQPG1047.html Or a black leather love seat ( and two or three chairs facing it): http://www.wayfair.com/Flash-Furniture-Hercules-Imperial-Series-Leather-Love-Seat-FFC1995.html Some awesome club chairs : http://www.cymax.com/Coaster-Accent-Chair-in-Bird-and-Branch-Pattern-460406.htm http://www.wayfair.com/Monarch-Specialties-Inc.-Vintage-French-Fabric-Arm-Chair-and-Ottoman-I-8058-MNQ2448.html and I know you have black and white as your colors but know that you can add some color with pillows or even with some chairs - red, purple. yellow or orange would be fun. Some ideas: http://www.wayfair.com/Armen-Living-1404-Club-Chair-ARA2244.html?piid%5B0%5D=10031715 http://www.wayfair.com/Colt-Modern-Club-Chair-CSTD1445-CSTD1445.html?piid%5B0%5D=15331005 http://www.overstock.com/Home-Garden/Furniture-of-America-Gianne-Contemporary-Striped-Club-Chair/9998516/product.html?refccid=URVAVNNNBEDJ6QKB34JHV4DQW4&searchidx=10 http://www.overstock.com/Home-Garden/angelo-HOME-Provence-Purple-Sutton-Arm-Chair/9066837/product.html?refccid=MCJCMZ7EU42L4U2HJYM22YNIFA&searchidx=13