I like second plan! That space will fit the wardrobe perfectly. Take all colors from the art. The colors can be lighter or darker than the colors you see in art. Take "Venice" with you to paint store and they might be able to help you choose good colors. Idea: paint four walls the same and see if you like that. If you feel the room lacks interest, then paint the accent wall. Choose a pale green that harmonizes with "Venice" and a darker green accent. Yellow + red accent White + blue accent

You could also bring in some texture with bamboo sticks or decorative branches and help balance a bit the height of your room with small scale furniture. Spray paint them if you find the perfect size and shape but they aren't the color that you need. Ikea carries white decorative stalks for a very good price. the ones in the 1st picture hold well with small kids around and you don't need a vase for them. there are washi paper or crinkly paper floor lamps with a soft beautifully diffused glow For a budget friendly version check ikea or target http://www.ikea.com/us/en/catalog/products/80028552/

With your original pictures - I agree with larger rug. But I don't agree with comments suggesting the rooms are monochromatic. They are lively indeed. I think you are just missing some accessories! Art work on the empty walls - even just a single large dramatic piece is in order. In the bedroom on the white wall, in the living space behind the sofa, in the greenish bedroom behind the two beds. Those are instant areas where you can improve. But I think your spaces are lovely and well put together. Also I agree with the comment about table lamps - some of those would really add something, and your coffee table looks so empty - maybe just one gorgeous bowl, or stack some books. These rooms are 90% done in my opinions, just need a few finishing touches. Some of my rooms come out like this because the clients are not willing to pay for those last few finish items or feel they can do that part themselves...

I was diagnosed with dust mite allergy as a child and all my parents did was replace the carpet in the bedroom with hard flooring and replace the feather pillow with synthetic. There is a school of thought that says making our environment too clean and sterile might be contributing to the increase in certain health problems. So don't feel you have to rush to update the whole house. I'm not even sure what difference the paint (on your list) makes? (Low VOC is best but that is unrelated to dust mites.) Take the time to do some research and also seek advice from medical advisors and allergy support groups, there are aspects of your question which are probably better answered by other parents in a similar situation rather than by people on a decorating forum. Keep up-to-date with what's on the market, there are products which didn't exist when I was a child which might well be useful for you, but also be wary, don't feel you must invest in every new product that promises to do amazing things. Dust mite allergy is allergy to dust mites, which live in dust, so what you want to be doing is reducing dust. The list from Brandi Nash Hicks is a great start. Make everything easy to dust, for example enclosed storage rather than open shelving, streamlined lighting rather than ornate fixtures. Use dusting tools that collect and remove the dust rather than simply sweep it off (I was going to give the example of static cloths but they're not appropraite in all situations, you're not supposed to use those near electronics). Get a good vacuum cleaner with a HEPA filter. I guess it's hard to say no to stuffed toys but store them inside something and vacuum them often. With large expensive items especially, weigh up your options before replacing them. For example a good quality fabric sofa might not necessarily be worse than a leather sofa, depending on various factors including leather quality, your climate, how much sunlight it is exposed to, what you clean it with, etc.