Why the pool often decides the holiday

For plenty of British families, the swimming pool is not a nice extra bolted onto a hotel stay — it is the reason for going. A rainy Tuesday in the Cotswolds or a blustery weekend on the Yorkshire coast can be rescued entirely by an hour of splashing, and a pool that opens when you need it, with water warm enough for a four-year-old, is worth more than any amount of chintzy lounge décor.

The trouble is the gap between what a listing implies and what you actually get. "Indoor pool" might mean a 12-metre plunge pool open from 10am to 6pm with an adults-only hour at 5pm. "Family room" might mean a standard double with two camp beds squeezed between the wardrobe and the window. None of that is dishonesty — it is simply what happens when you book on the strength of a headline and a wide-angle photograph. A little research before you pay makes an enormous difference, particularly during half-term and the long summer break.

Read the pool timetable, not just the pool description

Hotel pools rarely operate as a free-for-all. Most run a schedule, and the schedule is where family breaks are won or lost. Timetables commonly include early-morning lane swimming for adults, a general swim through the middle of the day, an adults-only slot in the late afternoon, and possibly an aqua class that fills the pool with equipment. Some spas restrict children to a narrow window, sometimes only at weekends.

• Opening hours: check first swim and last entry, not just the overall times. Last entry is often 30 to 45 minutes before closing.
• Adults-only sessions: common in the early morning and early evening, which can wipe out the two hours either side of dinner.
• Cleaning closures: many pools shut for an hour mid-morning or early afternoon for water testing.
• Slides and flumes: frequently operate on limited hours, sometimes weekends and school holidays only, and occasionally require a booked slot.
• Outdoor pools: usually seasonal, often May to September, and heated to a variable degree — worth asking for the temperature in spring and autumn.

If the pool is run alongside a leisure club with members, expect it to be busiest on weekday evenings and Sunday mornings. Ask whether members share the pool and whether there are quiet times.

Children's swimming rules and ratios

This is the detail that catches most families out. Many UK hotel pools operate a supervision ratio, often one adult to two children under eight, with a stricter one-to-one rule for under-fours or non-swimmers. Some hotels insist that under-fives stay in a shallow teaching pool rather than the main pool, which is fine if such a pool exists and frustrating if it does not.

Also worth confirming:

• Lifeguards: many hotel pools have none. You are the supervision, so plan accordingly if you have more than one child.
• Depth: ask for the shallow end depth in metres. A shallow end of 0.9 metres suits a five-year-old; 1.2 metres does not.
• Nappies: swim nappies are usually required for babies and toddlers, and disposable nappies are almost never allowed in the water.
• Equipment: armbands, floats and rings are sometimes banned during busy sessions for safety reasons.
• Towels: often not provided poolside. Take your own to avoid a damp walk back to the room.

Family room layouts: look past "sleeps four"

Occupancy figures flatter rooms. "Sleeps four" may mean two adults and two children under twelve, with a cot charged separately and no floor space left once the sofa bed is open. If everyone needs to sleep well, prioritise layout over size on paper.

• Separate sleeping areas: a partition, an alcove or a second room makes bedtime far easier than four beds in one space.
• Bunk beds: popular with children, but check weight and age limits, and whether the top bunk has a proper guard rail.
• Interconnecting rooms: the gold standard for families with teenagers, and usually cheaper than a suite.
• Travel cots: confirm they are provided free and that there is genuine space for one, including a gap beside the bed.
• Bath versus shower: a bath makes washing small children much simpler after a swim.
• Location: rooms directly above the pool can be warm and noisy, particularly when the plant room hums overnight.

Booking tactics for school holidays

School holiday dates are when every sensible detail becomes scarce. Rates climb, minimum stays appear — often two or three nights at weekends and over half-term — and the best family rooms go first, sometimes six months ahead. Book as early as your plans allow, and be flexible about which night you travel: Sunday to Thursday is reliably cheaper and quieter than Friday and Saturday.

Where the hotel runs timed pool sessions, book your slots when you book the room rather than on arrival. Swim first thing, when the water is cleanest and the pool emptiest. If the pool is an added charge, compare the cost across a two-night stay against a hotel that includes it in the rate — the difference is often more than the room price suggests.

Questions worth asking before you pay

A quick email or phone call resolves nearly everything. Ask what time the pool opens and closes, whether children are restricted to certain hours, what the adult-to-child ratio is, whether lifeguards are on duty, which sessions include slides, and whether the pool is shared with leisure club members. Then ask for the exact bed configuration of the room you are being offered, whether a cot fits, and how far the room is from the pool. Get it in writing if you can.

Do that, and the holiday starts the moment you drop the bags — rather than with a disappointed eight-year-old standing in a towel at a locked pool door.