Rome runs at its own pace. The mistake is trying to overtake it. Lunch ends at four. Dinner starts at nine. Nothing meaningful happens in the in-between hours, which is why those hours are best spent walking. Once you accept the schedule, the city stops feeling like a destination and starts feeling like a place. Two things to know. First, Rome is bigger and older than your assumptions about it. Most of the photographs you have seen were taken in a few hundred metres of the Centro Storico, but Trastevere, Monti, Testaccio, the Aventine, and the Gianicolo are different cities glued onto the same map. Pick one as your base and walk from there. Second, the Romans have already had every restaurant trend that visitors are excited about. The traditional places have outlasted all of them, which is why they are still the ones with reservations. Atrium recommends Rome by neighbourhood and by mealtime. Hotel de Russie for the Spanish Steps quiet. Villa Agrippina for the Vatican-side garden. Pierluigi for the Roman power lunch. Retrobottega for the kitchen-lab evening. Drink Kong in Monti when the night starts properly. Sacripant for the gallery hour between lunch and dinner. Walk between them. Don't try to do everything.

Lisbon moves at two speeds. The day is for hills, light, and slow lunches. The night doesn't really start until 9pm, often closer to 10. Trying to book an early dinner in Lisbon means eating in an empty restaurant: the locals haven't sat down yet. Accept the rhythm and the city makes sense. The other thing to know is that Lisbon is small. You can walk from Bairro Alto to Alfama in twenty minutes if you don't stop to look at the tiles. The trams are touristy and the metro is fine, but neither does much work compared to your shoes. Pick a flat-ish neighbourhood to base yourself in (Chiado, Príncipe Real, Santos), and most of the city is within a thirty-minute walk. Atrium recommends Lisbon for the visitor who plans to walk it. Most of the picks below sit in Chiado, Príncipe Real, or Santos for that reason; you can move between dinners and bars without the metro. The one exception is Princesa, thirty minutes south on the Costa da Caparica, which is the beach afternoon worth one of the trip's days. Walk the rest.

Ibiza has two reputations. The clubs and the rest. The clubs are what gets written about. The rest is what people return for. The interior, the north coast, the agroturismos, the village squares, the salt flats, the south coast coves: most of the island operates at a pace that has nothing to do with the headlines. Two things to know. First, you need a car. Public transport is minimal and the best places sit on roads that do not appear in guidebooks. Second, the calendar matters more than the neighbourhood. June is one island; August is another. May and late September are when the locals return to their own restaurants. Atrium recommends the Ibiza that lives off the commercial axis. Petunia for Es Vedrà. Atzaró in the orange-tree interior. Hacienda Na Xamena, the island's first luxury hotel, still privately owned on the north coast. Sa Punta for the Ibizan kitchen that does both bullit de peix and a contemporary plate. Las Dalias on a Saturday for the hippie market that still has the artisans the rest of the island lost. Drive the interior. Skip the clubs.

Choose the wrong arrondissement and Paris becomes a city you visit. Choose the right one and it becomes a city you almost live in. The difference is not the address; it is the geometry of your day. The 1st walks differently to the 11th. The 6th sleeps later. The Marais and the Golden Triangle share a postal system and very little else. What ruins most Paris weekends is the assumption that the city is small enough to cover in three days. It is not. A coffee on the Left Bank and a dinner past Bastille is not a leisurely Sunday, it is a forty-five-minute Métro ride and the loss of the late afternoon you should have spent walking. The trick is to pick a pocket and let it set the rhythm. Eat where the locals eat, in the arrondissement they live in. Skip the Champs-Élysées for dinner entirely. Visit the Eiffel Tower from the 7th, on foot, after sunset. For Atrium, Paris reads as five different cities, and the recommendations below are organised that way. The 8th for old-money rituals at Le Bristol. The 9th for La Fantaisie, where a single hotel can hold a day. The 1st for Plénitude, the most controlled dining room in France. The 10th for Le Syndicat, where the spec is French to the bone. Most of the trip is settled the moment you choose the arrondissement; everything below assumes that decision is already made.

London is a city where the neighbourhood you choose decides almost everything else. Mayfair, Notting Hill, Shoreditch, and Hackney are not variations of the same place. Each has its own shops, restaurants, prices, and crowd. The Thames separates north and south, but the lines that matter run along the streets, not the river. Most visitors try to cover too much. Cabs are expensive and the Tube takes longer than the map suggests. Coffee in Soho followed by dinner in Hackney is not a Sunday, it is forty-five minutes underground and a wasted late afternoon. The better approach is to pick one area, walk it, and let the trip take shape from there. The London Atrium recommends is built around postcodes. The Emory in Knightsbridge for quiet luxury close to Hyde Park. The Mandrake in Fitzrovia for a hotel built around its courtyard. Core by Clare Smyth and Juno Omakase, both in Notting Hill, for two different ways of doing restraint at the table. Tayēr + Elementary in Shoreditch and A Bar with Shapes for a Name in Dalston for the bars that the global cocktail world flies in to drink at. Pick the neighbourhood first. The rest is detail.