A properly made guest bed starts with the basics, but it's the details that make it special—like comfortable sheets, extra blankets and pillows, an essential oils diffuser, and even a welcome note.

With sheet sets at $350 to $1,600 for a queen bed, Frette has a vested interest in advocating the "more is more" decorating approach to bedding -- the "well-made bed" could cost more than $10,000 ...

Even after fitted sheets became widely available in the 1950s, hospital corners are still widely used in healthcare facilities to change the sheets on a bed without having to move an immobile patient.

I talked to experts to learn more about common fabrics like cashmere, wool, leather and linen and how to properly care for them. Plus, I break down popular terms, like Oeko-Tex certified.

After spending almost 100 hours testing 15 duvet covers, we recommend five. Read on to see the linen, cotton, light and heavy duvet covers we love.