"I know it's not illegal, but I don't think it's appropriate for a residential area," resident Mariah Jacobsson told the local Norrköpings Tidningar (NT) newspaper.
Jacobsson is one of many residents who live near Norrköping's Arbis Theatre, where what's being billed as Sweden's largest-ever swingers party will be held on October 19th.
Anticipation has been building for the "Eyes Wide Shut" party, which boasts a lengthy invite list of Scandinavia's "delicious, delightful, and horny swingers".
The initial allotment of 375 tickets on offer from Club Adam and Eva, which calls itself "Sweden's leading swingers club", sold out so quickly that organizers chose to extend the guest list and release another fifty tickets.
The upcoming "Eyes Wide Shut" is set to be the club's first event at the Arbis, an arts and cultural centre that Club Adam and Eva is considering moving into permanently at the end of the year.
In March of this year, the club, which claims to have 2,500 members, was forced to abandon its attempt to set a new Swedish record for "group sex" after a fire destroyed the building that housed the "erotic oasis".
But the upcoming sex party as well as the proposed permanent move to the Arbis has angered neighbours as the theatre is in the middle of a residential neighbourhood.
"This kind of thing doesn't belong here; them having sex and changing partners. I think it's too close to small children and families," Louise Carlén, who lives in the area, told Sveriges Television (SVT).
An online reader poll conducted by local paper NT prompted 402 responses, with just over half indicating they would like to participate in the swingers party.
Roughly one in three, however, said they would say no if their partner asked them to accompany them to a swingers party, while 66 respondents said they would break up with their partner if asked to go to a swingers party.
The owner of the building set to house the sex party, Robin Karlsson, has a hard time seeing what all the fuss is about.
"If someone rings me and says 'Hello, I want to buy 300 tickets' then I'm not going to say 'And who will you be sleeping with?'. I'm not allowed to, I can't and I don't want to," he told SVT.
Speaking with NT, Karlsson said he had little patience for locals' complaints.
"It is 2013 after all. How can people be scared of people shagging?" he said.
A representative from Club Adam and Eva told NT the club draws a lot of money to Norrköping, as 90 percent of its members live elsewhere in Sweden.
"The municipality ought to hold us dear," he said.
The upcoming event, which will cost attendees 650 kronor ($103), will follow in the footsteps of the masquerade orgy scene in the 1999 Stanley Kubrick film Eyes Wide Shut, which starred Tom Cruise and Nicole Kidman.
According to Club Adam and Eva, the event will feature an erotic burlesque show "of the highest class" while the Eyes Wide Shut ritual will be coordinated by a professional director.