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Top Small Function Rooms in Cardiff
Not every occasion needs a huge guest list to feel special. Small function rooms in Cardiff are a popular choice for birthday lunches, private dinners, family celebrations, and business gatherings where everyone can actually sit around the same table. Around Cardiff Bay, St Mary Street, and the city centre, you'll find private dining rooms, event spaces, and function suites suited to smaller groups. Many strike the right balance between privacy and atmosphere, making them ideal for occasions that call for something a little more personal. Take a look through the listings and find a room that works.
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![Private Upstairs Room at O'Neill's Trinity Street Cardiff in Cardiff Centre]()
from £200
minimum spend / per sessionCheck availabilityPrivate Upstairs Room
100 guestsO'Neill's Trinity Street CardiffCardiff Centre
#Supervenue
CChristopher W.
“Great size venue for our party and brilliant location.” -
![Chairman’s Lounge at Cardiff City Stadium in Cardiff Outskirts]()
from £235
hire fee / per sessionCheck availabilityChairman’s Lounge
70 guestsCardiff City StadiumCardiff OutskirtsAAlun J.
“Splendid venue and excellent support from the duty staff and the events planner.” -
![Roald Dahl Suite at voco St David's Cardiff in Cardiff]()
from £35
per person / per dayCheck availabilityRoald Dahl Suite
250 guestsvoco St David's CardiffCardiffLocated on the first floor with floor to ceiling windows and views overlooking Cardiff Bay. The room has stairs and lift access. The room has natural daylight and air-conditioning. -
![Emma & Enniston at Future Inn Cardiff Bay in Cardiff Outskirts]()
from £630
hire fee / per sessionCheck availabilityEmma & Enniston
130 guestsFuture Inn Cardiff BayCardiff OutskirtsThis is a hotel in Cardiff Bay. It offers easy access to the city centre and good transport links. The events centre includes six meeting and event spaces All of them are located on the ground floor. -
![Private Event Space at The Welsh House Cardiff in Cardiff Centre]()
from £30
per person / per sessionCheck availabilityPrivate Event Space
96 guestsThe Welsh House CardiffCardiff CentreAn independent regional restaurant & bar situated idyllically adjacent to Cardiff Castle. We boast an exceptional private function room equipped with sound systems and a private bar. -
![Holder at Future Inn Cardiff Bay in Cardiff Outskirts]()
from £360
hire fee / per sessionCheck availabilityHolder
80 guestsFuture Inn Cardiff BayCardiff OutskirtsHolder is a larger and adaptable space for conferences, workshops, and team events. With 65 sqm of room, you can host seminars with 80 guests theatre-style. -
![Corner Suites at Cardiff City Stadium in Cardiff Outskirts]()
from £235
hire fee / per sessionCheck availabilityCorner Suites
70 guestsCardiff City StadiumCardiff OutskirtsBoth the Heineken Lounge and the Legends Suite are multifunctional spaces that can adapt to various occasions, from celebratory events to post-conference gatherings. -
![Fred Keenor Suite at Cardiff City Stadium in Cardiff Outskirts]()
from £235
hire fee / per sessionCheck availabilityFred Keenor Suite
50 guestsCardiff City StadiumCardiff OutskirtsComplemented by complimentary Wi-Fi and air conditioning, this space caters to those seeking a simple yet effective venue for their next event. Its functional setup and essential amenities make it a versatile choice for various -
![Captain's Lounge at Cardiff City Stadium in Cardiff Outskirts]()
from £235
hire fee / per sessionCheck availabilityCaptain's Lounge
100 guestsCardiff City StadiumCardiff OutskirtsThe presence of staging capabilities offers the flexibility to accommodate presentations, performances, or speeches, adding a dynamic element to the venue. -
![Premier Lounge at Cardiff City Stadium in Cardiff Outskirts]()
from £235
hire fee / per sessionCheck availabilityPremier Lounge
600 guestsCardiff City StadiumCardiff OutskirtsThe space caters to receptions for up to 600 guests, a theatre-style setting accommodating 450 attendees, and dinners or banquets for 250 guests, ensuring adaptability for a wide array of occasions. -
![Downstairs Section at O'Neill's Trinity Street Cardiff in Cardiff Centre]()
from £5
per person / per sessionCheck availabilityDownstairs Section
40 guestsO'Neill's Trinity Street CardiffCardiff Centre
#Supervenue
DDaniel H.
“Venue was great size, bar staff were brilliant” -
![Viewing Deck at Lo Lounge in Cardiff]()
from £125
hire fee / per afternoonCheck availabilityViewing Deck
120 guestsLo LoungeCardiffTTipswalo D.
“Great communication throughout booking process. Fantastic price for a venue in The Bay. Fantastic decor.”
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FAQs about Top Small Function Rooms in Cardiff
The cost of small function rooms averages around £250 hire fee per event. The final price will depend on location, size, amenities, and demand. Some venues also offer additional packages that include catering, AV equipment, or additional services. Take a look at the usual price ranges in Cardiff, based on Tagvenue data from June 2026:
| From £235 | to £500 | hire fee per event |
| From £400 | to £5000 | minimum spend per event |
| From £34 | per person |
Based on the popularity and user ratings on Tagvenue (updated June 2026), the best options include:
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Private Upstairs Room at O'Neill's Trinity Street Cardiff in Cardiff Centre - rated 5/5
Our user said: ‘Venue was great size, bar staff were brilliant...’ -
Chairman’s Lounge at Cardiff City Stadium in Cardiff Outskirts - rated 5/5
Our user said: ‘Splendid venue and excellent support from the duty staff and the events planner.’ -
Viewing Deck at Lo Lounge in Cardiff - rated 4.9/5
Our user said: ‘Great communication throughout booking process. Fantastic price for a venue in The Bay.’
These are the venues within 0.2 mi from central Cardiff, available to book on Tagvenue:
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Upstairs Room at O'Neill's St Mary Street Cardiff
on 85-87 St Mary St, Cardiff - 0.1 mi from centre.
Venue said: The upstairs room also features a private entrance, adding an exclusive touch. Whatever the occasion, O'Neill's St Mary Street has you covered. *Please note this is not an accessible space, step access*... -
The Green Room at The Piano Works Cardiff
on Imperial Gate, St Mary Street - 0.1 mi from centre.
Venue said: Renowned for its high-energy live music and stylish, versatile space, The Piano Works Cardiff offers a truly unique setting for corporate events and special occasions that make an impact. -
Private Dining Room at Gaucho Cardiff
on 19 The Hayes St David's Centre - 0.2 mi from centre.
Venue said: The private dining room combines Gaucho’s premium food and wine offerings with an environment that’s ideal for creating memorable events.
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Page last updated in June 2026
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