lovely antique Persian Kashan rug. 
Origin: Kashan, Iran
Size: 4 feet by 6 feet 6 inches
Design: Classic central medallion design, typical of Kashan rugs, with intricate floral motifs and a detailed border.  
Classic Kashan characteristics:
Central medallion with intricate floral motifs  
Corner spandrels echoing the central design  
Elaborate border with repeating patterns  
Colors: The primary colors seem to be reds, blues, and creams, with some hints of green and possibly gold or yellow. This is a traditional palette for Kashan rugs.
Age: Given the slightly faded colors and what appears to be some wear, it's likely this rug is at least several decades old, possibly even an antique (over 100 years old).
Condition:  The rug seems to be in generally good condition for its age. There might be some areas of wear consistent with an older rug.
Kashan rugs are renowned for their fine craftsmanship, durable construction, and beautiful designs.  
They were often used as decorative pieces in formal settings.
Antique Kashan rugs are considered collectible investments.  
Knot Density: A higher knot count generally indicates finer craftsmanship and higher value. 
Materials: Use of high-quality wool and dyes increases value.  
Design & Colors: Intricate, well-balanced designs and harmonious colors are desirable.