Four thousand delegates change the hotels, the lobbies, the traffic, and the hour at which anyone is free.
Two or three times a quarter a large conference lands on the city and the hotel map changes for four days. Whole floors go to one company. The lobbies fill with people wearing badges they have forgotten to take off. The bars run at capacity until one in the morning, and the restaurants inside the hotels serve at a volume they never manage in an ordinary week.
For anyone who works into the hotels, conference weeks are a distinct weather system with predictable effects. Some of them help.
This is counterintuitive and it is the most reliable effect of the lot. A quiet Tuesday lobby has six people in it and a desk clerk with attention to spare. A conference Tuesday lobby has ninety people in it at half past eleven, half of them strangers to each other, arriving in ones and twos from group dinners across the city. There is no such thing as a conspicuous arrival in a room like that. Anyone walking to the lift at midnight during a conference week is invisible in the simplest possible way, which is that there are forty other people doing the same thing.
Arrival times are the part that genuinely moves, and it is worth being honest about it. Twenty to thirty minutes across the centre is a real figure in an ordinary week. During a large conference the roads around the venue and the approaches to the southern hotels congest in a way that a normal evening never produces, and the honest version of the same promise becomes the upper end of that window rather than the lower.
We plan for it rather than absorbing it silently. If the city is in one of these weeks, the confirmation says so and gives a real window, because a guest who is told thirty minutes and waits forty has been handled badly even if the evening that follows is perfect.
Conference evenings end when the group dinner disperses, and group dinners in this city disperse between half past ten and midnight. The result is a booking curve that looks nothing like an ordinary week: very little before ten, a hard wave from eleven, and a second smaller wave after one from people who went on to a bar with colleagues and are only now genuinely off duty.
None of that costs anything extra. A one-hour booking is one hundred and eighty euro at midnight in the middle of a conference week exactly as it is at noon on a Sunday, because there is no surcharge for the hour, the day or the journey. If the week has pushed everything late, the late hours are simply the hours, and somebody is working them.
Colleagues on the same floor. This is the only genuinely new variable a conference week introduces, and it is worth ten seconds of thought rather than none. A corporate block books a contiguous run of rooms, which means the people behind the doors either side of yours are not strangers.
It changes very little in practice, because a corridor at midnight is a corridor and nobody in a conference hotel is monitoring it. But it is the reason we keep arrivals free of anything that would make somebody look up: no waiting outside a door, no conversation in a hallway, a knock pitched for one door. The building does the rest.
If you are reading this on the second evening of a long week, the practical version is short. Say the district, say the length, say the hour, and expect a window rather than a promise. The rest of how a same-evening booking is put together is written out separately, and the centre-specific detail sits in the Centrum hotel guide.
Tonight
Name the room, the hour and how long you would like her there. The reply comes back in about ten minutes with who is free.