Changeover Carpet Maths: Getting a London Short-Let Guest-Ready in 48 Hours

Short-let hosting in London is a logistics sport. The guest leaves at eleven, the next one arrives at three the following afternoon, and somewhere in those twenty-eight hours you have to reset a one-bed flat in a Victorian conversion with a hallway carpet, a bedroom carpet and a rug that has seen things. Reviews don't mention thread count or the brand of coffee pods. They mention smell, they mention "felt a bit tired," and occasionally they mention a stain nobody dealt with.

Here's how to work a 48-hour turnaround without soaking a carpet you can't dry.

The clock starts when the door clicks

Treat the changeover as two distinct phases: the first six hours are for triage and treatment, and everything after that is drying and inspection. Any wet work started after hour twelve is a gamble, particularly on wool, and particularly in a flat where the only ventilation is two sash windows that open a hand's width.

Get your cleaning team — or yourself — into the property with a torch before anything else happens. Bright overhead light hides everything. A torch held almost flat to the pile shows up spills, crushed traffic lanes and the suitcase-wheel tracks that guests never notice they've made.

Stain triage: sixty seconds per mark

You don't need twenty products; you need to identify what you're looking at and not make it worse.

• Protein (spilt milk, egg, pet accidents, vomit) — cold water only, blotted from the edge inwards, then an enzyme product left to dwell. Warm water sets these permanently.
• Tannin (tea, coffee, red wine) — blot first with a dry white towel, then a mild acidic spotter. The instinct to scrub is what turns a coin-sized mark into a palm-sized one.
• Oil and pigment (makeup, fake tan, grease, shoe polish, hair oil) — a small amount of pH-neutral detergent worked in gently, then rinsed and blotted. Fake tan is the sleeper problem in London short-lets; it transfers from feet onto pale bedroom carpet and shows up two days later.
• Wax or candle — freeze with an ice cube in a bag, crack it off, then blot the residue with paper and a warm iron over a towel. Slowly.
• Unknown and dried — dampen, blot, walk away for ten minutes, look again. If it hasn't shifted, flag it for the professional rather than escalating through five products in a panic.

One rule above all others: blot, don't rub. Rubbing fuzzes the fibre and makes the mark reflect light differently even after the stain is gone.

The smell test guests run without telling you

People won't write "there was a faint damp dog note near the bed." They'll write "wouldn't stay again." Get down to floor level and put your face near the carpet in the bedroom, the hallway and beside the bathroom door. That's the altitude a guest's nose operates at when they drop a bag on the floor.

Musty means moisture, which means either the last clean was too wet or there's a slow leak somewhere. Cooking smells sit in pile for days and need ventilation, not perfume. Pet odour needs an enzyme treatment at the source, not a scented powder on top of it — masking it works for roughly one arrival and then fails in a warm room.

Drying times in a small flat

This is where most turnaround plans fall apart. A soaked carpet in a 45-square-metre flat with no cross-breeze can take days. Some practical numbers:

• A professional low-moisture extraction on a synthetic carpet is typically walkable within a couple of hours and properly dry in six to twelve with airflow.
• Wool holds more and takes longer — plan on twelve to twenty-four hours with a dehumidifier running and air movers on the surface.
• A DIY shampoo-and-scrub job is the slowest option of all and the most likely to leave residue that pulls dirt back within a week.

Use air movement rather than heat. A dehumidifier in a closed room pulls moisture out of the backing, which is where the problem actually lives. Keep furniture off damp pile with foil pads or blocks, and don't let anyone walk on it in socks — compression while damp is what flattens a carpet permanently.

Watch for the warning signs of over-wetting: browning at the edges, a rippled or wavy surface, a smell that gets stronger rather than fading. All three mean stop and call someone.

The ten-minute room-by-room walkthrough

Do this last, with the torch, before you set the key safe code.

1. Entry and hallway — grit from the street, black sealant marks by the door, the first metre where every shoe lands.
2. Living room — the ring around the coffee table, the wine-glass zone beside the sofa, and the patch where a laptop bag gets dumped.
3. Bedroom — the strip beside the bed on both sides, the area under the bed, the dressing table if there is one, and suitcase wheel tracks from the door to the wardrobe.
4. Stairs, if you have them — the nose of every tread. Guest feet land there, and it's the first thing anyone sees on the way up.
5. Bathroom threshold — towel fluff and damp, which spreads surprisingly far.
6. Balcony or terrace door — grit and pollen, tracked straight across the rug.

Photograph anything you can't fix. Short-let platforms increasingly accept photo evidence for damage claims, and a timestamped picture taken during changeover is worth far more than a description written a week later.

Guest-proofing the 48 hours that follow

A decent mat at the front door does more for your carpet than any product. So does a spare set of slippers, a coaster within arm's reach of every seat, and a bin that's obviously a bin. If your hallway takes a beating, a washable runner is a far cheaper sacrifice than the carpet underneath.

Where possible, book professional cleaning for the longest gap in your calendar — midweek turns are easier than the Saturday-to-Saturday scramble, and you'll get a proper dry-time estimate rather than a guess. Tell them it's a short-let; a good London carpet cleaner will use a low-moisture method and leave you a short condition report you can keep on file.

Guests judge a flat in the first thirty seconds, mostly with their nose and their bare feet. Get those two right and the rest of the review usually writes itself.