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Royal SIAM Thai Restaurant

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70 Mamo St, Hilo, Island of Hawaii, HI 96720-2954
808-238-5068
Website
Today
11:00 am - 8:30 pm
Open now
See all hours
Hours:
Sun 5:00 pm - 8:00 pm
Mon - Sat 11:00 am - 8:30 pm

TripAdvisor Reviewer Highlights

Read all 21 reviews
Visitor rating
  • 10
    Excellent
  • 9
    Very good
  • 1
    Average
  • 1
    Poor
  • 0
    Terrible
Rating summary
  • Food
    4.5 of 5 stars
    Service
    4.5 of 5 stars
  • Value
    4.5 of 5 stars
    Atmosphere
    3.5 of 5 stars
Once known as Royal Siam Thai Restaurant

This is our must-go-to restaurant when in Hilo! The food is consistently good! The menu is large, but we can't get enough of the Green Curry. We usually do take-out, but there is a pleasant dining room as well. It is right up the street from the Farmers Market, next to the KTA grocery store.

4 of 5 starsReviewed March 31, 2015
Karrie B
,
Oro Valley, Arizona, United States
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21 Reviews from our TripAdvisor Community

Date | Rating
  • English first
  • French first
  • Japanese first
  • Any
English first
Oro Valley, Arizona, United States
Reviewer
5 reviews 5 reviews
2 helpful votes 2 helpful votes
4 of 5 stars Reviewed March 31, 2015

This is our must-go-to restaurant when in Hilo! The food is consistently good! The menu is large, but we can't get enough of the Green Curry. We usually do take-out, but there is a pleasant dining room as well. It is right up the street from the Farmers Market, next to the KTA grocery store.

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hilo
Top Contributor
63 reviews 63 reviews
43 restaurant reviews
39 helpful votes 39 helpful votes
3 of 5 stars Reviewed March 23, 2015

I love Thai Food. If you like Thai Food also, go to Naung Mai, which is up another block and behind the Garden shop. It is not fancy in ambiance like Royal SIAM but the food is much, much better and in bigger quantity. The best Thai food in Hilo (my opinion) is Sombat's. Really fresh, healthy, and absolutely delicious.... More 

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Senior Contributor
32 reviews 32 reviews
20 restaurant reviews
5 helpful votes 5 helpful votes
4 of 5 stars Reviewed February 18, 2015 via mobile

The food is good and the service was better than most of the places I've been here in Hilo. Food was fresh. ..came out quickly and delicious. The menu was diverse and they also serve bento....looked good....locals eat here....good sign..

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Cape Coral, Florida
Senior Contributor
22 reviews 22 reviews
9 restaurant reviews
5 helpful votes 5 helpful votes
5 of 5 stars Reviewed February 16, 2015

Hilo Siam Thai on Mamo st in Hilo (same as above name). Being a vegetarian most places only have the usual mushrooms, eggplant and squash to offer. This nice, clean, friendly restaurant had a better variety. I had the tofu with vega which were all the ones I like. Carrots, celery, broccoli, cabbage. Very happy with the taste and presentation.... More 

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Hilo, Hawaii
Top Contributor
115 reviews 115 reviews
17 restaurant reviews
144 helpful votes 144 helpful votes
5 of 5 stars Reviewed February 12, 2015

Just realised talking to the owner that they have been in business that long and that whenever I get an urge for Thai...this is where I come. Now they have added Korean items to the menu. With a lot of competition in Hilo it says a lot that Hilo Siam...its new name...has stayed in business so long. Right by Farmers... More 

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Jeruslem
Senior Contributor
25 reviews 25 reviews
10 restaurant reviews
10 helpful votes 10 helpful votes
4 of 5 stars Reviewed November 5, 2014

Tremendous portion sizes good service from a family run restaurant make sure you like spicy as this is a genuine Thai restaurant try the semolina dessert with sweet potatoe - to die for

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2 reviews
2 of 5 stars Reviewed October 18, 2014

if you choose to go to this restaurant, you will be making a big mistake. The food tasted old and oily. I had a stomach ache after eating here.The rice was overcooked and the shrimp was undercooked.This place is primarily a tourist trap for people who come off the cruise ships ..stay away.

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Inwood, West Virginia
Top Contributor
65 reviews 65 reviews
49 restaurant reviews
8 helpful votes 8 helpful votes
5 of 5 stars Reviewed September 10, 2014

We had a pleasant dinner at Royal SIAM Thai in Hilo. This is not the first time at the restaurant, and the food is excellent every time. It has a casual, Thai decor. Nothing fancy, but you're there to eat the food, not the decor. Stop in when you're in Hilo!

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Tampa, Florida
Top Contributor
127 reviews 127 reviews
58 restaurant reviews
89 helpful votes 89 helpful votes
4 of 5 stars Reviewed June 11, 2014

I came in late last night (about 8:45pm) and was the only person in the dining room. I was served a great meal and had very friendly service! I'd def go back again next time I'm in town!

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Florence, KY
Top Contributor
61 reviews 61 reviews
34 restaurant reviews
27 helpful votes 27 helpful votes
4 of 5 stars Reviewed December 3, 2012

If you like Thai food this is a nice place to try when on the East side of the Island. It was my first experience with Thai iced tea and I've been drinking it ever since. They serve all the traditional foods and everything my family had was enjoyable. Simple environment, but you can bring the whole family.

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Restaurant Details

Location and Contact Information

  • Address: 70 Mamo St, Hilo, Island of Hawaii, HI 96720-2954
  • Location: United States  >  Hawaii (HI)  >  Island of Hawaii  >  Hilo
  • Phone Number: 808-238-5068

Price and Cuisine

  • Cuisine: Asian, Thai
Open Hours
Sunday
5:00 pm - 8:00 pm
Monday
11:00 am - 8:30 pm
Tuesday
11:00 am - 8:30 pm
Wednesday
11:00 am - 8:30 pm
Thursday
11:00 am - 8:30 pm
Friday
11:00 am - 8:30 pm
Saturday
11:00 am - 8:30 pm

Questions & Answers

Questions? Get answers from Royal SIAM Thai Restaurant staff and past visitors.
Posting guidelines
Typical questions asked:
  • Do you have gluten-free options?
  • Is there a dress code?
  • Do you allow dogs on the outdoor patio?