There are certain pieces you need in every house for it to look complete, a bed (duh), sofa (duh), table (duh) but one thing that might not have struck you as a very "duh" item is a rug or carpet but, and I'm not exaggerating here, the right rug can totally change the look and feel of the room. Now that I've (hopefully) converted you to a floor decor believer, let me lead you to Saraswatii Global, an internationally recognised, award-winning online store for high quality rugs and carpets that look damn cool.
Whether you're more into loud and patterned rugs or neutral and simplistic carpets, Saraswatii Global does both and more. The carpets and rugs are made using super high quality yarn so these'll look good for ages. They've got different ways the carpets are made; some are hand tufted, hand knotted and they even have machine made options. Another awesome thing about them is their NGO called Saraswatii Foundation which helps uplift the underprivileged and rural areas of the country.
The prices of the rugs and carpets start at INR 2,760 but can go upto INR 10 Lakhs if you're feeling fancy (or are Jeff Bezos.)