Interior on Deck 6 — the sleep cave I needed

I travel solo and I cruise to sleep, eat, and read. Interior cabin 6320 is exactly what I wanted: pitch black, dead silent, and cold. The AC on Harmony interiors works almost too well — had to bump it up two degrees from default. Deck 6 is low enough that you feel very little motion, which matters to me because I get mildly seasick on higher decks. The corridor is quiet because most people on Deck 6 are experienced cruisers who also chose low-deck interiors on purpose. The cabin has decent storage for one person. USB outlets on both sides of the bed. No complaints. The only reason it's not five stars is the bathroom door occasionally sticks and needs a firm pull.