1. The couch.
    Not every couch, and not one specific couch, but most of the couches I've been around on a regular basis have worked great. Most of my best sleeping happens there.
  2. Under the table in the formal dining room at my good friend Alex's house.
    It was a rarely used dining room with no windows. Dark, quiet, cool, and cozy. The carpet was clean and soft. And you could smell tortillas and other delicious foods being made fresh in the kitchen.