Your question is too vague. Please elaborate .....

You don't necessarily need only paintings as artwork. You can put some floating shelves near the dining space with some good crockery like plates or tea sets which can be used for occasions as well. On the wall in the living space you could keep either traditional or modern show pieces.

In civil engineering this condition is known as efflorescence this condition occurs due to capillary action of water in brick in which water contains diffrent salts comes on surface through voids of brick and evaporates and salt rest on surface as shown in image this salts may be harmful or not this depends on type and chemistry of salts generally it is not harmful

Thanks Cornerstone Design Studio. Could you please tell me what you mean by floor plan. The area that needs to be covered is 14 inches X 12 inches. I have extended area for dining space also.