If I understand the seasons in India correctly, you have already been through the rainy season. Don't wait until the next rainy season to get the problem with your drainage fixed. Now will probably be the ideal time to get it fixed. Please get someone who will tell you what to do and then have the work done. The paint on that wall in your beautiful home will keep coming off!

I'd go for make it white; then right there, flop one nice little white overstuffed loveseat or something that fit, or one big whopping chair, and fit in a tiny table and light; treat that corner as it's very own micro-retreat, and the seating is to not face out into the room. Like little lounge spots put under stairs, make this one dedicated to the view; and make it minimal. Decorate the rest of the room as if the column and retreat bit isn't there.

The amazing thing is that you have the luxury of approaching the architect about these issues. Laminated glass should address the security along with any alarm or security system you plan on installing, though the laminated glass may have size limitations. Regarding the waterproofing you should contact the architect, contactor and waterproofing subcontractor, or see about hiring an independent waterproofing specialist who can detail and warranty the condition. As a design consideration, make the lower area a garden or gallery or sculpture area and upper should be all glass. Maybe a garden roof there too if accessible or visible. In any case looks like an amazing place!!

This wall is constructed just 3months ago.Now it's rain season here.so I found it before plastering. Here it's seeing that this wall is exposed to rain .if rain with wind comes .what to say .the wall becomes wet and water comes inside the home through wall by leaking thru brick.This is the stair case wall.and local contractor saying if we plaster cement by tight.water doesn't come.but whatever if water flows regularly ,the wall will be damaged na.pls give advice.what to do .is there any option with sunshade.