Stefaniak, 36, a Florida resident, traveled to the Central American country in November to celebrate her birthday.
She was allegedly murdered by an illegal immigrant from Nicaragua who was working as a security guard at the hotel La Mares, also known as Villa le Mas, which rents out rooms through Airbnb, police officials said.
Stefaniak’s family filed the suit on Dec. 20, alleging that the company didn’t do a proper background check on Bismark Martinez, the illegal immigrant working as a security guard.

“Yet he was provided with his own apartment directly next to where Carla was staying.”
Gordon said Martinez was given free rein at the listing, handling the master keys to all the rentals and roaming the property.
They also said dangers and hazards at the vacation rental were ignored by the company despite being highlighted by customers who left negative reviews after staying there.
“A simple Google search was able to demonstrate there were a number of negative reviews, complaints that were made about this particular resort, about these particular owners and about this particular staff at the resort,” Gordon said. “Yet interestingly enough, there didn’t appear to be the same negative reviews on Airbnb.”
Stefaniak arrived at the rental around 5 p.m. on Nov. 27, and texted a friend that it was “pretty sketchy here,” including a picture of the Airbnb, friend Bugra Demirel of Tallahassee told the Associated Press.

Airbnb removed Villa le Mas—a compound with seven vacation apartments—from its site after the murder. The company said representatives reached out to the family and expressed condolences.
Frederico Jenkins, the villa’s attorney, said previously that the owners are cooperating with the authorities.
The owners nor Jenkins have not responded to the lawsuit.
Airbnb said in a statement to the Times that it was “standing by to support (the) investigation, as justice must be served quickly.”
“Our hearts are broken for Carla’s family, friends, and loved ones,” the statement said. “We reached out to provide support to them during this unimaginably difficult time.”
The company did not directly address the allegations in the lawsuit.