"I saw one star and I said, 'wow, what happened?'" said Barbalace.
In the review, the person said, in part, "well, that flag says all when you delve deeper and see the real customer base here."
The post went on to say "it's clearly geared and catered only to those who rally behind the rainbow flag."
"It was personal," said Barbalace. "If you go to a place and you’re not happy with the food or the service, I understand that if I made a mistake because we all make mistakes. This is a restaurant, not politics."
Upset by what was written, customers rallied around Barbalace.
"We thought we were beyond that at this point," said Tiffany Andrade, a customer.
Andrade specifically came to the cafe Friday to show her support.
"Luckily we live in the land of the free and people are entitled to their own opinion, but I do think it’s something to understand that we are an open community and there are people who come from all different countries and all different backgrounds and we should be welcoming of everyone," said Andrade.
Barbalace responded by sharing a post on the restaurant's Facebook page, saying:
"All are welcome at Zia Gianna, even this gentleman. We'd love to show him some kindness from the LGBTQ community because love always wins."
The Yelp post has since been taken down, but the flag will remain on the establishment’s front window.
Barbalace says they don't always have to agree, but his doors are always open if that person wants to give him a second chance.
"I'm here to serve the food. If he is hungry, he is welcome to come here," said Barbalace.