Ondol and Hanok Stays

Ondol heats a room from below. In the old system a fire under the kitchen floor sent smoke through stone flues laid beneath the whole room and out through a low chimney, warming the floor and the people sitting on it. Modern versions run hot water through pipes in the screed, but the habits it created are everywhere: shoes off at the door, floor seating, low tables, mattresses rolled out at night and folded away by day. A night in a hanok guesthouse is the way to feel it. You sleep on a padded mat on a warm floor in a room with paper doors, and it is either the best sleep of the trip or the worst.

What you actually see

• The warm floor - heat rising through the mat rather than out of the air.
• Yo and ibul - the thin mattress and quilt laid out at night and folded by day.
• Paper doors - lattice frames papered in hanji, thin and translucent.
• The agungi - the low firebox mouth in restored houses, still sooty.

When to go

Winter is when ondol makes sense, and a hanok room in January is a good argument for the whole system. Spring and autumn are comfortable. In summer the floors are off, the rooms are humid and old houses have limited air conditioning. Book directly and ask whether the room has its own bathroom, since many do not.

Honest expectations

A thin mattress on a hard heated floor keeps some people awake all night, and the heat is uneven, hot near the source and cool at the far wall. Old hanok are poorly insulated at head height, so your face is cold while your back sweats. Bathrooms are often shared across a courtyard, and paper doors do nothing at all for noise.

Nearby

Jeonju, Andong, Gyeongju and Bukchon all keep clusters of hanok open to guests.