As an fyi...to get around the cold, put a fleece blanket on the bottom (underneath you) first. Totally changes things. In fact you might overheat if it's doubled up...
I slept in a hammock for a while in a cramped basement apartment; it was one of those cheap nylon mesh ones, but really comfortable. Until the gentle rocking motion wore through several of the nylon cords and dumped me on the concrete floor one night. Worse, I knew from rock climbing that nylon rubbing on nylon wears ropes out really quickly, but it never occurred to me to apply that to the hammock until after.