
4.6 from 2,000+ Google reviews#1 on TripAdvisor
Function room & private party hire
Your own function room and party venue in Southampton
Your own room for the night: upstairs for 40 seated or 80 standing, the main restaurant for 70 seated or 100 standing, or the rooftop terrace for 34 seated or 50 standing. If you are looking for a function room or somewhere to hold a party in Southampton, this is it.
- Function room 40 seated or 80 standing
- Main restaurant 70 seated or 100 standing
- Rooftop terrace 34 seated or 50 standing
- Own sound system & DJ
A function room, not a soulless hall
Skip the echoey function hall. Our private Fiesta Room takes 40 seated or 80 standing with its own sound system and a personal server, and the main restaurant takes 70 seated or 100 standing. A real restaurant with a live kitchen and a bar, where the food and drink come with the room.
One venue, every occasion
Birthdays, corporate events, large groups, celebrations and receptions. Whatever the party venue or function room search that brought you here, one enquiry covers it and our team plans the night with you.
Food made for a crowd
Whole rotisserie chickens, sharing platters and bespoke buffets. Portuguese charcoal cooking is party food by design: generous, informal and the reason we are Southampton's #1 rated restaurant.

The food
Sample function room menus
Every menu is built around your party and budget. These are starting points, not limits.
- The Fiesta Buffet: whole rotisserie chickens, smoky wings, chorizo, salads, punched potatoes and rustic bread
- Set menu: choice of three mains including half chicken, picanha steak or chargrilled sea bass, with sides for the table
- Three-course feast: nibbles and tapas to start, sharing platters, then dessert with coffee
- Drinks packages: arrival cocktails, sangria jugs and prosecco by the bottle
Good to know
Your questions, answered
Do you hire out a function room in Southampton?
Yes. Our private Fiesta Room takes 40 seated or 80 standing with its own sound system, and the main restaurant takes 70 seated or 100 standing. It is a proper function room in the heart of Southampton, with a real kitchen and bar.
Can I hire Diego's as a party venue or a hall?
Absolutely. People searching for a hall for hire or somewhere to hold a party often end up somewhere with no atmosphere. Diego's gives you a private room at Southampton's #1 rated restaurant, with the kitchen and the bar already in it.
How many guests can you hold, and is there a hire fee?
40 seated or 80 standing in the private function room upstairs, 70 seated or 100 standing in the main restaurant, and 34 seated or 50 standing on the rooftop terrace. Tell us your date and numbers for a simple, transparent quote, we work on food and drink rather than heavy room fees.
Do you host corporate events and large groups?
Yes. The same spaces suit corporate events, team meals and large groups of 10 to 100, with easy set menus and one simple invoice.
Can we bring our own decorations and cake?
Yes. Balloons, banners, table styling and your own cake are all welcome. Arrive a little early and we will help you set the room up.
How far in advance should we book?
Weekends go quickly, especially in summer and the run-up to Christmas. Two to four weeks ahead is comfortable for most dates; for December, book as early as you can.
Let's plan it
Plan your function room & private hire with us
Two minutes now, one very good night later. We'll call you back today.
More ways to celebrate
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From the journal
Reading for your function room & private hire
- 24 July 2026Party Venue Southampton: What to Ask Before BookingHunting for a party venue in Southampton? Here are the smart questions to ask before you book, so your celebration goes off without a hitch.
- 9 July 2026Best Function Rooms to Hire in SouthamptonA friendly guide to function room hire in Southampton, from what to look for to how to book the right space for your celebration.
- 23 October 2026Hall Hire vs Function Room in SouthamptonHall hire vs function room: we compare the two for parties in Southampton so you can pick the right venue without the stress or hidden costs.
