snug

a small secluded room

offering safety; well protected or concealed; "a snug harbor"; "a snug hideout"

fitting closely but comfortably; "a close fit"

well and tightly constructed; "a snug house"; "a snug little sailboat"

enjoying or affording comforting warmth and shelter especially in a small space; "a cozy nook near the fire"; "snug in bed"; "a snug little apartment"