Cooler tones and ample lighting are two ways to make a space feel larger. Furniture pieces with slim legs and details that are lifted off of the floor a few more inches, give an airy, spacious look. You might also consider incorporating reflective surfaces such as a mirror to catch light, or a polished lighting fixture to draw the eye upward. Hope this helps--good luck!

Well, for lack of a better idea, since you find it a drafty little space. I'm assuming the draft comes in on the right? Most of the necessities in the area are located of the left side; i.e. vent, thermostat, light switch etc. What I would do I think is caulk up the drafty spots, maybe even add sized poster board wrapped in batting I covered in a gorgeous fuscia with diagonal grosgrain ribbons every which way covered with a heavy velvet to be attached to the area above & below the window. (Of course remove the drapes that are hanging in there). This for the purpose of using it as a pin-it board for notes. Attach a table height board covered in felt to carry across the full width of the little room. Leaving just enough space for a comfortable little antique desk chair. Paint the back wall a bright cobalt blue, paint the ceiling a silvery pearlescent white. Find a way to attach a clip-on task lamp. And stretch a heavy duty enough wire across the top of the opening and complete it with a heavy doubled velvet drape with a drooping valance. Place a swag with fringe & jewels on it to be closed when not in use. Voila intrigue is yours!

You might paint the walls a bold color you really love, but I would recommend staying away from wallpaper as it is costly and too difficult to change. I agree with another poster that wider trim around the doors would help, and I would suggest that you paint all the trim white and add crown molding and a mop-board along the floor-wall junctures. I love the wood-tone door and would keep it as an accent piece and for contrast. You might add large, framed mirrors to the walls to reflect light and perhaps add a console table with a fairly large lamp. An interesting print area rug also can add pizzazz to this space. If you can use the bold wall color as an accent throughout the house, it will help to tie the entire color scheme together and give your home a unified look. In the offset hallway shown in Photos Two, Three, and Four, I would suggest you place a desk and chair and/or perhaps some bookcases and curio cabinets to make an interesting entrance way that can double as a study or home office. As an alternative, you could place a narrow dining table with leaves that fold down to allow easy traffic through the hallway. Above the table you could display some framed mirrors and, in matching frames, family photos that can serve as conversation starters. When you entertain, the fold-down dining table could be pulled out and/or moved to another room to accommodate your guests.

Well that is an interesting picture. I can assure you that hanging wall gardens are all the rage and that is a great idea but they can also be high maintenance if exposed to high winds / sunshine etc. I have seen some lovely fake ones that would do just as well. You could also have a few pots with additional greenery. As you say your view is not "great" maybe you can have a creeper in one of the pots that can weave its way through the railing. I probably wouldn't go for one big chair as it could dominate the entire space. I would consider a table with a couple of fold-able chairs .... something that is comfortable, inviting if you have friends over but can be placed in a corner if you just want to open up the space. I do not think you need a carpet and but maybe some fancy outdoor tiles will look just as nice. You want it to be easy care and weather proof. Do you need or wish to incorporate a washing line? A pull out one from a wall will be perfect that way you can retract it back when you are not using it. If you deck gets too much sun, you may want to consider some shade shutters. I have seen them called 'plantation' shutters. GOOD LUCK