Something like this might be a good solution for you http://inhabitat.com/kichlers-new-led-tape-light-fits-just-about-everywhere/

A houzz contributor, not too long ago, had made a wine rack out of 4'x4' wooden pallets, that are used in the US to move a load of goods with a fork-lift truck. Perhaps they have them in your country. He cut them in half so they were only two feet deep and stacked them up to high counter height. The wood would be a nice contrast with your concrete, might add a little warmth to the space. cascio.offsite@gmail.com

sararahim123 What constitutes an adequate illumination level varies from person to person. What exactly do you require illuminated? If its simply ambient light you would have tiny lights as shown that throw light on the stairs itself. If a bit more is required you could consider adding a railing with a light under. If general illumination is what you are going after, but in a muted way, would suggest wall scones that throw light upwards onto the ceiling, diffusing the light.

Vastu principleas were initially important for temple building. Over long peaceful and prosperous period, it was incorporated to home building. Traditionally- single floor and detached setup. Historically, there was no toilet, no bathrooms and stairs in homes and so no mention of it. All the principles told now are merely an attempt to incorporate those per initial house vastu principles. I am vastu literate and my homes follow those principles as much as possible+ whatever I could from feng sui. I think you should follow any principles(vastu/feng sui etc) if you could. If you could not, there is no reason to get dishearted, home is where the heart is. If you want to build vastu or feng sui compliant building, always engage a vastu consultant who may charge just pennies. Dont believe on so called self made experts. You really need someone who had studied and renowned expert. google it. Thanks