The room number you should avoid when you arrive at a hotel: "They won't tell you."

When we arrive at a hotel, we all expect a restful night in a comfortable bed with soft sheets. But sometimes, circumstances don't allow for that. To avoid this, it's important to pay attention to a few details.

Javier Sobrino, founder of Descubriendo Viajes, a Spanish travel platform specializing in curated accommodations, explains in statements reported by the Daily Mail : "After staying in hundreds of hotels, I've learned that the room number on your reservation can determine the success or failure of your stay."

According to Sobrino, rooms ending in '01' are typically located right next to elevators, stairwells, and service areas—essentially the noisiest areas on each floor.

"These rooms capture all the foot traffic from other guests coming and going at all hours. You'll also hear the housekeeping staff starting their rounds early in the morning, with carts passing your door first and supplies being replenished in nearby service areas," says Sobrino.

Night owls stumbling back to their rooms, early risers heading to breakfast , or the constant use of the elevator will end up becoming the soundtrack of guests' stay, according to the expert.

The hotel won't tell you about any of this: "Hotels are dedicated to selling their entire inventory. They won't provide information about which rooms might be less attractive unless you specifically ask," says Sobrino.

Beyond rooms ending in '01,' Sobrino warns guests to stay away from potentially problematic areas, such as rooms directly above or below the hotel's restaurant and bars, which can be noisy early in the morning or well into the evening.

"The same goes for rooms facing busy streets or located near loading docks where shipments arrive early in the morning," the expert adds.

For families with young children or those planning to go to bed early, Sobrino also advises booking rooms located a good distance from the stairs , as these tend to have heavy doors that slam shut when people use them to enter or exit the hallways.

Sobrino recommends travelers "make smart requests" when inquiring about a room, call the hotel directly after booking online, and " mention any special occasions, even if it's just that you've been looking forward to this vacation for months."

"A simple 'I prefer a quiet room, away from the elevators' works wonders. The front desk staff wants you to enjoy your stay and will note your reservation. If you're in their loyalty program, mention it; this often improves your room assignment priority," the expert adds.