Mandarin Oriental, London (Hyde Park) vs The Emory

Door attendants Joaquin and Graham, receptionists Hugo, Ruby and Georgi, breakfast servers Mark and Sherif, bartender Claire: these names show up because people keep singling them out, not because we're padding a list. One couple's card got declined at check-in and a receptionist talked them through it so smoothly the awkwardness never landed. The people running this hotel are the reason to book it, ahead of the building or the rate.

Room quality swings hard depending on where you land. This is a converted, listed Victorian building, and the turret rooms and park-facing Deluxes read as genuinely special, but some guests end up in interior rooms with no real window and thin connecting doors. One guest paying around £1,000 a night got moved after a noisy night into a smaller room with no view, and was offered a drink at the bar as the fix. Another was told at 1am that a couple next door were audible through the connecting wall. Push for a Hyde Park-facing Deluxe and stay away from anything near a connecting door or a lift — the gap between a good room and a bad one here is wider than the rate should allow.

Dinner by Heston Blumenthal (two Michelin stars, built on old English dishes rather than anything experimental) and The Rosebery's park-view breakfast and afternoon tea both come up as the standout meals of a London trip, and guests doing the old-world comparison keep landing here over Claridge's or the Lanesborough. Those chasing round-the-clock anticipation from day one tend to end up at the Connaught instead. Book this one for the staff, the view and the food, go in ready to fight for room category, and it earns the stay.

The Emory is Maybourne's one real departure from the Claridge's/Connaught script: Richard Rogers' glass box across from Hyde Park, 61 keys, all-suite, barely a lobby, sharing a spa and rooftop with The Berkeley next door. Rooms opened around £1,600 a night and the entry Courtyard Studios still sit near that, which buys floor-to-ceiling glass, a stocked-free minibar, a Cédric Grolet pastry on arrival, and Surrenne downstairs. The Tracy Anderson studio and the snow shower come up before anything else, and one guest who stayed five months called it the best spa experience of a very long trip.

This isn't a hotel that performs the same on night one as it does on night five. That same long-stay guest tracked their own housekeeping scores and found mornings ran measurably better than afternoons, and said outright that a one or two-night stay is too small a sample to judge the place fairly. Shorter stays back that up: a slow check-in, no manager on hand when something goes wrong, a "suite" facing a neighbouring building with the curtains stuck shut for lack of any view. The website oversells too: the welcome champagne, the unpacking service, the non-alcoholic beer add-on don't always show up as promised, which reads less like malice than a property still smoothing its edges two years in. A few guests have also flagged there's no concierge on-site for basics like booking a car, so you're sent next door to The Berkeley.

Book it for the design, the spa, and the quiet if you can give it three nights or more and shrug off an off moment; it isn't built for a single-night stopover. Give it three nights and the butlers, the glass, and Surrenne make the case themselves.