Diadema Restaurant

Name: Diadema Restaurant
Address: Via Palermo, 31, Rome, Lazio, Italy
Telephone: +393887359088
Price range: $$
Rating: 4.9

4211 votes

#550 of 15760 restaurants in Rome

Insights from reviews

What makes this Roman stop stand out? Explore Italian pasta, including the carbonara guests praise most.

Open now 11AM - 11:30PM

Updated 2 years ago

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Spaghetti bolognese at Diadema Restaurant

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If you feel hungry after visiting Dolce Vita Gallery 35 135 500, have a meal at this restaurant. Italian and Mediterranean food is worth a try here. Here you will be offered nicely cooked penne pasta, fettuccine bolognese and filet américain. It's time to try good tiramisu, panna cotta and lemon sorbet. Diadema Restaurant will offer you delicious limoncello, Spritz or grappa. Get your meal started with great espresso, cappuccino or juice.

It's easy to find this place due to its great location. The success of this spot would be impossible without the creative staff. Fine service is something visitors appreciate here. This restaurant offers you food at average prices. The modern decor and pretty atmosphere let clients feel relaxed here. The overall score of Diadema Restaurant on Google is 4.3.

Best in the city

Great service

Steakhouse

Pizzeria

Restaurant

Cosy atmosphere

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Linguine – the most popular Italian dish in 2025

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espresso martini

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Ratings of Diadema Restaurant

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Trip

(4.3/5)

1855

Opentable

(4/5)

Visitors' reviews on Diadema Restaurant

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Jason Rubinoff 4 months ago on Google

My experience at Diadema Restaurant in Rome was extremely disappointing and easily one of the worst dining experiences I had during my trip. I ordered the entrecôte steak, but instead the waiter brought me a T-bone steak and immediately walked away without saying a word about the substitution. I had to call him back to ask why I had received a completely different cut of meat than what I ordered. His response was unbelievably dismissive — he told me it was “my lucky day” because a T-bone steak costs more. I explained that I did not order a T-bone steak and that I would have appreciated being informed beforehand or at least asked if I wanted a different option. Instead of apologizing, he became short and rude, telling me that this was all they had available and asking if I wanted something else. Since I did not have time to restart the entire order process, I reluctantly agreed to keep it. What made the situation even worse was the complete lack of professionalism afterward. The waiter never returned to the table for the remainder of the meal and instead avoided us entirely, sending other staff members over instead. There was never any apology, acknowledgment, or attempt to correct the situation. When the bill arrived, I specifically asked to speak with the original waiter. I explained how disappointed I was with both the service and the way the situation had been handled. I also pointed out that a T-bone steak is only more expensive because of the additional bone weight — not because the actual meat itself is superior or more valuable than the cut I originally ordered. Overall, the service was rude, dismissive, and unprofessional from start to finish. A restaurant of this reputation should know how to communicate basic menu availability issues respectfully and professionally. I would strongly recommend avoiding Diadema if you expect honest service or even basic courtesy. Food: 1 Service: 1 Atmosphere: 1

Concierge Restaurant Guru · Highlights from 1,167 reviews

1,167 reviews are a lot to read. I'll show you what guests consistently praise — and what's worth knowing before you go.

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Graham a year ago on Restaurant Guru

Super tasty!

+ 3 photos

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Austrian Tourist 2 years ago on Restaurant Guru

WORST RESTAURANT EVER!! I would definitely not suggest to go here! We went to this restaurant with my husband and friends for new years evening. The waiters were extremely impolite, we first got the wrong food, additionally it was cold and it tasted very bad!!! I had never eaten such bad food, I almost threw up! There are so much more better restaurants in Rome, DO NOT GO HERE!!

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+39 388 735 9088

Book

Italian, Mediterranean, Pizza

€€€€ Price range per person €20 - €30

Via Palermo, 31

Rome, Lazio, Italy

Cavour

Address

Cavour

Via Palermo, 31, Rome, Lazio, Italy

Features

Wi-Fi Wheelchair accessible Cash only Outdoor seating Takeaway Booking TV

Opening hours

SundaySun	11AM-11:30PM
MondayMon	11AM-11:30PM
TuesdayTue	11AM-11:30PM
WednesdayWed	11AM-11:30PM
ThursdayThu	11AM-11:30PM
FridayFri	11AM-11:30PM
SaturdaySat	11AM-11:30PM