You might try 4'x6', landscape format. We typically start by centering the object around 5' above the floor. Might work better a little higher but you can try it out with tape.

That artwork is fabulous. I think it really suits the room actually - just a few tiny accents of colour around the room and it will be very very nice. I love the cushion suggestions in the above by asquithoatley. Some low, small cement candle bowls with a touch of painted colour could do the trick to tie the artwork to the coffee table.. and a dash of colour or white on the table would do nicely. The table and the artwork really hit it off in this room nicely.

Hi. Yes, me too, number 3! Some really beautiful pieces of art being suggested. Wow, such vibrant colours. May I make a suggestion? Maybe it's just me, Terri, but try rearranging your rug so that it runs widest ACROSS the room, not lengthwise. It will fit under your furniture better, and although as much of it won't be showing, I think it may look better, given the size of the geometric pattern. I'm curious to know what you think. :)

If you have a small powder room, then you don't need art work. Don't just hang art on the wall as you have a blank wall - negative space in a small room is a positive. I would consider a decorative mirror with bevelled edges to provide some visual interest, to make the space seem bigger, and which has a function. Consider wall lights to complemement the mirror, and don't go with the plain jane mirror option that most builders offer as standard. Best of luck, Dr Retro of Dr Retro House Calls