High-density wool rug last longer, believe or not.:-)

Hand-made is better than machine-made. Machine-made is usually hard on the back, which may scratch the hardwood floor. The sticky padding, that is sold in store in recent years, usually usually come from China (sorry, have to mention this), may stick to hardwood floor over time, you may have to refinish hardwood floor many years later.

Google "how to select area rug", you will learn a lot about area rug. Have fun!