Meet the business traveler who's collected 15,000 hotel Do Not Disturb signs

Francesca Street, CNNPublished 3rd April 2018
(CNN) — Most of us forget all about hotel Do Not Disturb signs until the 10 a.m. housekeeping knock disturbs our jet-lagged slumber and we realize, too late, that it's hanging on the wrong side of the door.
This retired Italian UN worker has amassed an incredible collection of 15,000 Do Not Disturb signs from hotels, inns and resorts across the globe.
His collection might have begun accidentally, but since then he's become passionate about the art, design and stories behind these sometimes striking signs.

Accidental beginnings

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Flores collects Do Not Disturb signs from around the world. Pictured here left to right: Icelandic Travel Industry Association, Iceland; Hotel de la Culture, Conakry, Guinea and Izmaylovo-Alfa Hotel, Moscow, Russia.
Courtesy Edoardo Flores
Flores started his collection inadvertently in 1995 after he hung up an interesting-looking Do Not Disturb notice in his office after bringing it back from a business trip to Pakistan.
"Most collections start by chance," he tells CNN Travel. "People pick up objects and then maybe later on they think it's something nice to collect."
It was a colleague who gave him the idea.
"Then someone said, these are nice, why don't you collect them? So I started picking them up on a more regular basis."
Thanks to his UN job, Flores had plenty of opportunities as a he traveled the world for work.
Flores photographed with his extensive collection.
Flores photographed with his extensive collection.
Courtesy Edoardo Flores
Observing the varied signs and their designs was a fun diversion for Flores, he started to keep an eye out for quirky styles.
But, he insists: "I haven't stayed in 15,000 hotels."
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There are lots of different styles of signs. Pictured here: Mozart Hotel, Rorschach, Switzerland; Michelangelo Hotel, Milan Italy and Narita View Hotel, Narita, Chiba, Japan.
Courtesy Edoardo Flores
As his collection grew, his friends, family and colleagues started to look out for the signs on their travels. He also exchanges them with three other serious sign fanatics.
In his extensive collection Flores has accumulated some eye-catching older designs to complement newer, slicker styles.
"The older ones that I have I think they must be from between 1940s, '50s maybe," he says. "They had to have simple designs, some more humorous ones, with some cartoon, and maybe some catchy phrase or something like that."
The exact history of Do Not Disturb signs remains unknown, says Flores. It's not clear when they first were used, but they became increasingly popular during the mid-20th century.
"Nothing is really certain about Do Not Disturb signs, nobody can really say who started using them or when," he says.

Changing trends

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Picking a favorite sign is hard for Flores. Pictured here: citizenM Hotels, The Netherlands; Domus Sanctae Marthae, Vatican City and Complesso Turistico Sciaccamare Sciacca, Sicily.
Courtesy Edoardo Flores
Newer signs reflect increased globalization and the growing popularity of world travel. It's now common for a Do Not Disturb sign to have its message printed in multiple languages.
"In the 1970s they started changing, partly because of the increase in mass tourism," Flores explains.
After collecting so many thousands of signs, Flores says it's very tricky for him to pick a favorite. His standouts are those with an intriguing back story.
"I usually look for something a little bit unusual about the hotels where they come from," he says. "I have one which I consider quite rare, it comes from the Vatican City, and it's from a hotel where the present Pope lives at the moment."
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It's become more common for hotels to choose more intricate designs. Pictured here: The Chedi, Muscat, Oman; The Liberty Hotel, Boston, USA (former prison) and Villa Santi Hotel and Resort, Luang Prabang, Laos.
Courtesy Edoardo Flores
In the 21st century, Do Not Disturb messages take multiple forms. It's not uncommon to spot toys, door stops and intricately carved signs outside hotel doors -- rather than simple paper hangers.
So how does Flores nab the more elaborate signs before he checks out?
"Let's put it this way, I don't just take things," he clarifies. "The paper signs, they are the most common ones, and no bother for the hotel to replace."
"But in some hotels they have wooden ones, which are special, so I always ask the hotel if I can buy them, and they don't always agree, but often they do. And in that case I am quite happy to pay for them."

Preserving the past

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Some signs aren't signs at all, like this fun toy dragon. Pictured here: Lake Vyrnwy Hotel and Spa, Llanwyddyn, Powys, Wales.
Courtesy Edoardo Flores
Flores' signs range from the striking to the cheeky, united in providing an intriguing insight into changing tourism habits.
Flores says his collection isn't about the money and it's "anybody's guess" how much it might be worth: "I don't only think of it in terms of value or monetary value, to me it's just fun collecting and I enjoy having them," he says.
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Flores has considered displaying his collection in an exhibition. Pictured here: Auditorium Hotel, Madrid Barajas Airport, Spain; Beach Hotel Monte-Carlo Monaco and Beverly Hills Hotel and Bungalows, Beverly Hills USA.
Courtesy Edoardo Flores
That said, Flores has considered what might happen to his collection when he decides to retire from collecting. He thinks there could be an interest in this slice of travel history.
"I would like to find a place that's willing to set up a kind of permanent display," he says. "I don't like to call it museum, but it could be anything where they could be preserved or shown to the public or something like that."
Flores also encourages other people who travel extensively to start similar collections, or find other ways to entertain themselves on business trips.
"I'm sure that people who travel already have collections. I know people who kept matchboxes from hotels, or the various toiletries from hotels," says Flores.
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Flores encourages other business travellers to find a hobby to divert them. Pictured here: Kirkwood Hotel, Des Moines, Iowa, USA.
Courtesy Edoardo Flores
That said, he knows it's unusual to have such an exhaustive collection -- most people are more selective.
"Some people have small collections, maybe they keep only ones where they've actually stayed, or where something important in their life happened," he says.
Although Flores enjoys accumulating his signs from across the world, he says doesn't take his hoard too seriously: "Generally speaking there isn't a lot to say about Do Not Disturb signs," he concludes. "They're just very plain objects for a very specific reason."
Flores says he just enjoys collecting the signs as a fun pastime, a way of remembering his travels and connecting him with the world outside his home: "It's a hobby, just something to keep me busy," he adds.