Most cities punish you for arriving in the wrong season. Valencia punishes you for arriving at the wrong hour of the day, which is a different problem and a much more fixable one. The paella you came for is a lunch dish here, and the serious rice kitchens stop cooking it somewhere in the middle of the afternoon. The market that anchors the old city empties before the afternoon has properly begun, and does not open at all on Sundays. There is a mid-morning meal, the esmorzaret, that a large part of the city takes seriously and that most visitors sleep straight through. Dinner does not start until an hour that feels, from northern Europe, like an administrative error.
Get the sequence right and three days is enough to leave feeling you understood the place. Get it wrong and you will spend those three days eating reheated rice beside other people who also got it wrong. What follows is an order, not a checklist.
How long the city is actually worth
Three full days is the honest answer. Valencia is Spain's third city and it is built at a scale you can cross on foot, but it has three distinct halves — the dense medieval core, the tiled fishermen's quarter out by the sand, and the white concrete science district in the old riverbed — and each of them wants an unhurried half-day plus a meal. Two days is genuinely workable if you accept that you are choosing two of those three and leaving the third for another trip; most people should drop the science district, which is the one that behaves least like Valencia and most like an airport terminal with fish in it.
Four days is the point of diminishing returns inside the city limits, and the right use of a fourth day is to leave it: the rice fields and lagoon to the south, or a short train south-west to a castle town. Five days in the city alone and you will start repeating yourself.
The clock that decides your order
Six fixed points, and everything else arranges itself around them.
The esmorzaret runs roughly from mid-morning to just before noon. It is a full sandwich, a small beer or a cremaet — coffee cut with rum and burnt sugar — and it is the reason nobody here is hungry at one o'clock. Expect to pay in the region of EUR 6 to 9 with the drink.
The Mercat Central trades in the morning and closes in the early afternoon, Monday to Saturday. Sunday it is shut. Plan a market morning and you have chosen your day of the week whether you meant to or not.
Rice is lunch. The classic houses generally serve it from around one in the afternoon until the middle of the afternoon and then stop. A place advertising paella at nine in the evening is not cooking for Valencians.
Horchata belongs to the late afternoon — the tiger-nut drink, served cold, with the finger-shaped fartons you dunk in it. It fills the dead hour between lunch ending and the evening starting.
Dinner begins somewhere around nine and a table booked for half past eight will have the dining room to itself.
And once a week, the Tribunal de les Aigües convenes outdoors at the cathedral's Apostles' Door, on Thursdays around midday, to settle irrigation disputes among farmers of the surrounding market gardens. It is held in Valencian, without lawyers or written records, and UNESCO added it to its intangible heritage list in 2009. Sessions typically shift to the Wednesday when the Thursday is a public holiday. The whole thing can be over in a few minutes, which is precisely why it is worth being early for.