Looking for free venue with semi private space for teachers to meet up

I'm looking for a venue (like a pub, not a library) for an event for teachers that has a space that could be booked for free for a group of 20ish to meet on a weeknight.

The event is a meet up for teachers to get together and share ideas to take back to their schools.

I'm thinking a room or nooky space of an already open venue like a pub, where we wouldn't disturb other customers.

There's really no possibility of paying upfront for a space or package, but like all humans, teachers love to eat and drink, and I'm sure things would be bought.

Ideal if:

-central/inner north🌃

-it serves food and drinks 🍷

-we can talk/make presentations and be heard🎙️

-there's a screen we can use 📺

PS Yes I know it's insane to ask a venue to make space when there's no guarantee of actual buying. In a perfect world our public school system would be beautifully funded and but in the mean time we teachers pay for our own professional development in our own time and I'm hoping somewhere there is a little space we can do it in. 🙏

Edit: I have library/council space/school as a backup option, but I’m asking for help with an venue here because I was hoping for something with a bit of a vibe, to make it a bit more special and unique of an event.

Edit 2: it’s a formal event, and the attendees won’t necessarily know each other, so someone’s house isn’t an option.