Capsule hotels.

A capsule hotel rents you a sleeping berth instead of a room. The berth takes three forms — the enclosed pod with a hard shell and a blind or door, the curtained bunk that is closer to a refined dorm bed, and the small cabin you can stand up in — and everything else is shared: bathrooms, lockers, a lounge, often a bathhouse. The first one opened in Osaka in 1979, built for businessmen who had missed the last train, and the format still carries that logic — a clean, private place to sleep in an expensive location, at a fraction of the price of a room there.

The economics are the point. In nearly every city we cover, a capsule prices above a hostel dorm bed and below the cheapest private room in the same neighbourhood. You pay slightly more than a dorm for privacy a dorm cannot give you; you pay much less than a room because the floor space is shared. That makes the format best suited to solo travellers on short stays — one to three nights, a base near the station or the terminal, days spent out of the building. It suits couples and light sleepers less naturally, though double pods and well-isolated cabins are closing that gap.

What separates a good capsule hotel from a bad one is rarely the pod itself — it is noise discipline, cleanliness, and how the shared spaces are run. None of that appears on a rate card, which is why every listing in this index is scored from what guests actually report in their reviews: how we rate is documented here.