Sweet Poison, I take my Ipad to bed to read at night. My router (old Linksys) is upstairs and this is a big old over 100 year old house with thickish walls. I notice in the morning (yes, check my mail and weather before I actually get dressed LOL) that my wifi signal is often just one bar. As I walk through the house it jumps back up to 3. My signal is pretty strong generally--can pick it up at our pool a bit of distance from the house or in my studio, also a distance. I think maybe the walls, ceilings--and some distance, affect the signal in my bedroom.
Diane