The brothel, which opened earlier in the year, has replaced real-life women with busty sex dolls.
Sergi Prieto, co-founder of the service, told Daily Star Online that “business is booming”.
People are flocking to see what all the fuss is about.
On the darker side, the owner has also admitted he has been forced to turn away people who wanted to act out a “rape fantasy”.
He said: “Obviously we don't want to promote this kind of activity.”
The sex robot industry is booming, with people wanting to get their hands on their very own cyborg.
The industry is thought to be worth a shocking $50 billion (£37 billion) by 2020.
The brothel offers a way for punters to try out the silicone dolls.
LUMIDOLLS
“The true story is that when we started the business, we had a lot of demand – lots more than expected”
Sergi Prieto
Where is it?
Lumidolls is a sex robot brothel in Barcelona, Spain.
The brothel is situated in a secret location, and claims to be the world’s first of its kind.
It has also been claimed that Lumidolls used to be located near the tourist hotspot Las Ramblas.
Local residents expressed their dismay, and the company faced many complaints.
The police reportedly raided the building but the business had already vacated, and is now booming elsewhere.
Sergi himself dismissed these claims, saying: “The true story is that when we started the business, we had a lot of demand – lots more than expected.
Inside world's first sex doll brothel where men fulfil 'wildest fantasies'
Lumidolls
“But when the media got involved, it blew up. The demand was then multiplied.
“Because the original venue was small, we could no longer provide a good service."
Customers have to pay online before being told of the secret location.
From the outside passersby would have no idea what they were walking past.
A spokesman for Lumidolls revealed to Daily Star Online that it has an ambitious plan to expand the business globally.
Lumidolls hope to open shop in major cities around the world, including London, Paris, New York and Beijing.
LUMIDOLLS
What happens at Lumidolls?
Customers at the brothel can pay to have alone time together with a sex robot.
They can have their pick from four “hyper-realistic” call girls.
Lumidolls say the dolls are made out of thermoplastic elastomer and come with their own personalities and attributes.
The sexbots are called Katy, Kanda, Lily and Yoko and have three fetish-looks to choose from.
These are executive, school girl or fitness woman and are all “realistic “ and “human-like”.
Sex robot's makers lab UNCOVERED in first behind-the-scenes pictures
Daily Star
It was also revealed to Daily Star Online that punters can request the dolls to be dressed in specific clothes, or left in specific positions.
What goes on in each specific room remains private, but the candle-lit spaces are fitted-out with plasma TVs and adult films.
The company prides itself on its ability to create “unique experiences” for their customers.
Each customer is urged to wear condoms.
Each doll is cleaned with a ”special antibacterial soap" after each session.
Sergi claims that tourists are flocking to the Spanish city to indulge in the “luxury masturbation” service.
He said: "Customers come to seek new sexual experiences and new ways of living sex.
"Like us, they believe that this is the beginning of the sex of the future."
LUMIDOLLS
How much does it cost?
Punters can get their very own sex doll for around £67 ($83) for half an hour and £83 ($108) for an hour per session.
Each silicone doll costs around £4,373 to produce and are built to give the ultimate satisfaction.
Sergei said: “We want to cater for all fantasies and offer maximum customisation.”