A messy bedroom is counter productive to romance. A messy room does not feel good – and it is certainly not romantic. All sorts of things can pile up in a bedroom and can make it impossible to foster romance. You'd be surprised how much stress can form in the back of your wife's mind when the room is a mess. And remember that a woman's response to stress is the opposite of a man's response: a man wants stress relief via sex and a woman wants nothing even resembling sex. For women, less stress helps foster a libido friendly environment. Is it worth two to three minutes a day to reduce your wife's stress and thus increase her sex drive? I think it is.
The number one thing that makes a room look messy is a messy bed. In most bedrooms, the bed takes up the majority of the space. So, to make a big impact fast, it's simple, it's easy and it's worth the effort: make your bed. It takes me about two minutes to make our bed in the morning. And if there are clothes on the floor, it takes about 30 seconds to toss them in the hamper / laundry room – and, hey, while I'm in the laundry room anyway, why not take 60 more seconds to toss the lights/darks into the washer? Don't worry about whose clothes they are by the way – you can compete and blame or you can just take three minutes and invest in creating an environment where romance can grow. Do what it takes and don't complain (I am sure she picks up plenty of your stuff in other areas).
"Do everything without complaining or arguing…" ~ Philippians 2:14
(The above is not written about marriage, but it makes a good point, nonetheless – try to apply it to life in general.)
Do this bedroom routine every morning and your wife will take note. She will really appreciate it and begin to feel more relaxed when she's in the bedroom. This is exactly what she needs – to feel relaxed – before she will be receptive to romance.
Again, the golden rule: make sure you do these things without expectations. Remember: if you do something for someone with the expectation of receiving something in return, then you really did not do anything for the other person – you did it for yourself.
Do these things to love and serve your wife. In serving your wife, you are also serving God and advancing His plan for marriage. You will be earning respect and your will be loving your wife as you should. The result will be movement toward the goal of having a mutually fulfilling marriage and a mutually fulfilling sex life.