The side of the front building is facing the balcony window of my house, is there anything to say

Yes, you remember, as long as it is an electrical appliance, there will be radiation, it is only a matter of size, and solar energy is also an electrical appliance...

This is often the case when renovating, and it is not surprising that the building will not be affected. Now if you want to repair it, you just need to paint it flat with cement mortar.

There's nothing wrong with balconies facing the front wall, which is now prone to many patterns in the city. If you feel more concerned, you can carefully observe which seat the corner of the building is directly facing the balcony, and then you can arrange a few pots in that position.

I can't see it clearly, but is it a square column or a cylinder? >>>More

Two ways, either make a fabric cushion for the sofa on that side, or add a layer of gauze to the curtain to avoid direct sunlight.