I drew a very crude sketch, definitely not to scale, of how I see your room working. Essentially, you could treat it as two separate seating areas, which makes for easier and more intimate conversation when entertaining a lot of people. Trying to have everyone facing each other in a large room just won't work, and makes for very awkward conversation. I find that at parties and get-togethers, people go off in smaller groups of two to four, then mingle and move around the room to chat with different people. So, to that end, you could establish two conversation areas that will each seat six to eight people. You can also have some of your dining room chairs upholstered and comfortable enough to carry into the entertaining area to create extra seating here. In the far corner by the window, I placed a chair and ottoman, so that is seating for two, and before the get-together, you could place a couple of your dining room chairs over there to create a other small grouping for four. You should still have enough open area in this large space for some people to stand and move around, which a lot of people prefer to do at a party (I know I do!). The bright yellow sofa is a modern take on the old ?English sofa, which in think is the perfect foil to your ultra-modern sectional. The yellow is a bright, cheery - and unexpected - color, but works nicely with white and just says "fun" to me! The small blue tub chair(s) would be placed at an angle facing your white sectional, so you would establish a color,scheme of white, blue and yellow. To this, you could add black, Gray and darker blues through your accessories and artwork. The little blue ceramic drum stool adds a touch of the exotic (and more fun) and is easy to move around as a small side table to set drinks on.

Just a little ceramic information to share as a potter. Vitrified simply means the clay has become glass like by being fired to its proper maturing temperature. Usually ceramic tile means it is a lower temperature clay like earthenware or terra cotta. Porcelain is fired to the highest temperature and is more vitrified if you will. This usually means it is less porous to to absorb water and harder. Low fired ceramics with glazes much darker or lighter than the clay body will show chips easier. Rectified has to do with making the edges precise enough to fit smoothly together for less grout lines. So porcelain cost more to produce but it is more sturdy. All clay tiles should be vitrified.

the back wall panels look like ikea besta doors. the hanging cabinet could also be besta boxes, but with customized doors. the console in front of it, you could get a similar look by using a malm console table and cutting it to height. from there you'd want to use a couple of besta cabinets to create the closed off storage. the low bench could be made with plywood and then stained or painted to match the finish of the malm/besta combo you choose. besta cabinets :: http://www.ikea.com/us/en/catalog/categories/departments/living_room/11794/ malm console table :: http://www.ikea.com/us/en/catalog/products/80196480/

11' across x 14' can be a decent conversation zone. You have a nice window without too many privacy issues - good natural light, nice view of tropical foliage. The higher ceilings seem to be one of the things that will help the room feel larger - here's a completely different approach for you to consider . . I would instead make the beam a feature - wrap it in stained wood boards (that match or just a 1/2 tone darker than your entry doors) to make it seem a real beam - the small beam that comes out to meet it might be painted black and some faux black bolt heads and plates applied to get it to feel more rustic industrial / loft - afraid a fake ceiling is going to look cheap. The wood and black above will work with the off white walls. Consider instead of texturally painting the tv wall - let the "canvas" of all the walls stay uniform if you want this to feel large. The back wall is not the best for television anyway, if you want the room to feel large - the wall to the left of the door - (no window there, eh?) is the right place for a large flat screen wall mounted sort of center in the room (that appears to be the non-operable side of the double entry, typically unused) . Do a narrow console table underneath with drawers and lower shelves for the cable box. That can also be your laydown space and the rest of the room starts to live larger. I would run a large sectional in the beam recess area with the short end coming back just to become a lounge under the window (hang a stained board on angle brackets as a custom sofa shelf on the wall in the recessed end to fill it and provide a place for drinks) - the "beam" will make seating feel sort of sheltered there. It will work together . .you have a good long run nearly 8' there. If you want the room to feel big, a long sofa with a turn so many can gather for conversation is the best approach. Split the power for the television into two (easy 1 hour of electrician), patch this wall and hang wall mounted black iron sconces above the sofa back at two locations designed for the length of your sofa. Use a round iron and wood table at the sectional and a pair of great, small scale modern chairs facing the window set on the opposite wall. Consider a large scale modern abstract over the back of the sofa, and a gallery of black and white graphic photos framed in natural wood with black mats around the television on the tv wall. To the left of the window, hang some black iron hooks on a wall mounted wood board. With the wood, white and black iron, select your accent color carefully - neutrals for the main pieces - maybe some saddle leather for the chair pair. Color only in art - play off the green and white outside