Cafe Aion

4.3 ( 299 reviews )
Checking... 11:00 AM - 9:00 PM See Hours
$30–50
1235 Pennsylvania Ave, Boulder, CO 80302, United States
+1 303-993-8131
Nestled at 1235 Pennsylvania Ave in Boulder, CO, Cafe Aion offers an intimate setting that beckons diners looking for an authentic Spanish culinary experience. This small yet cozy restaurant shines with its diverse menu, featuring delightful tapas and hearty plates. Patrons rave about the Aion Burger, crafted with Colorado beef and topped with brie and bacon, as well as the mouthwatering seafood paella—a true testament to classic Spanish flavors. The tapas menu is a highlight, with crispy fried cauliflower served with saffron yogurt and marinated olives bursting with flavor. Reviewers consistently mention the freshness of the ingredients and the generous portions. Customers like Petra Rose feel welcomed by the attentive staff, who enhance the cozy atmosphere that’s perfect for a leisurely meal. Desserts like the flourless chili-cinnamon chocolate tort and traditional flan round out the dining experience, adding a sweet note to an already remarkable meal. Many, including regulars like Max Mansfield, find themselves returning for the warmth of the service and the exceptional quality of the food. Whether you’re looking for a casual dinner or a comforting escape, Cafe Aion promises an exquisite journey through Spanish cuisine that captivates both palate and heart.

Amenities and More

  • Accessibility
    • Has wheelchair-accessible car park
    • Has wheelchair-accessible seating
    • Has wheelchair-accessible toilet
  • Service options
    • Has outdoor seating
    • Has no-contact delivery
    • Offers delivery
    • Offers takeaway
    • Serves dine-in
  • Highlights
    • Serves great cocktails
    • Serves great coffee
    • Has great wine list
  • Popular for
    • Popular for breakfast
    • Popular for lunch
    • Popular for dinner
    • Good for solo dining
  • Offerings
    • Serves alcohol
    • Serves beer
    • Serves cocktails
    • Serves coffee
    • Serves happy-hour drinks
    • Serves happy-hour food
    • Serves healthy options
    • Serves organic dishes
    • Serves small plates
    • Serves spirits
    • Serves vegetarian dishes
    • Serves wine
  • Dining options
    • Serves breakfast
    • Serves brunch
    • Serves lunch
    • Serves dinner
    • Has catering
    • Serves dessert
    • Has seating
  • Amenities
    • Has bar on site
    • Has gender-neutral toilets
    • Has toilet
  • Atmosphere
    • Casual
    • Cosy
    • Romantic
    • Trendy
  • Crowd
    • Good for groups
  • Planning
    • Accepts reservations
  • Payments
    • Accepts credit cards
    • Accepts debit cards
    • Credit cards
  • Children
    • Good for kids
    • High chairs available

Reviews For Cafe Aion

Petra Rose
May 29,2025
I popped into Aion on a whim. I was looking for a nice place to sit, read my book and have a cup of tea. This smaller intimate restaurant really made me feel welcomed and cozy. The waitress was so kind and caring. They even offered me the fireplace seat, which was so helpful to warm myself. The food is tapas style, I order the marinated olives and hummus as well a cup of tea. All items were absolutely delicious! The olives had a nice kick of spice to them and the pita that came with my hummus was so warm and crispy. You could tell all the food was fresh made and flavorful! 10/10 experience I can't wait to return and try more delicious food
randy phelps
May 8,2025
Awesome food and staff. Trumpet mushrooms is the way to start the meal. Seafood paella is top notch.
mynisha taylor
Apr 28,2025
Ran across this little gem looking for something different... everything was amazing! Definitely gotta try the fried cauliflower with the saffron yogurt! The house paella and seafood paella were PERFECT! Paired with the cava rose and a beautiful friendly server the whole experience was awesome!
Eric Tardif
Apr 22,2025
First of all, the food is awesome. But that's not what this review is about. We were staying at a hotel next door, having dinner at Aion with our dog back at the hotel. The dog needed attention and we had to leave before our food came out. The staff were so helpful, packaging everything including our sangria. We wish we could have stayed for dinner, but the whole experience was amazing because they made us feel comfortable
Max Mansfield
Apr 21,2025
This is my favorite restaurant! I love the food here and the Spanish and French cuisine. I really just feel like you can’t get food like this easily in Colorado. I come here when I’m upset. I come here when I’m happy. I’m really just looking for excuses to come here!
Rachel C.
Apr 20,2025
Even though I moved out of Boulder a couple years I still come back to this place because it’s so good! The drinks are fantastic, and the fried cauliflower is awesome. Plus the service is always great, and I love its location- how it’s almost tucked away on the hill. I highly recommend this place.
Ryan Gaterman
Apr 8,2025
After living in the Boulder area for over 10 years, this one of my favorite go-to spots. Casual fare. Cool people. Delicious food. Great value.
Rebecca Jonez
Mar 27,2025
My aunt and I came here for the Denver Restaurant Week special. We were not disappointed! We had the roasted cauliflower and the housemade hummus to start. We shared the house paella and were very happy! Our only criticism is that the paella was a bit dry, but that may have been based on past experiences. The dessert flan was amazing! Our server was so darling, we would have taken her "to-go".

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