Gasworks house is absolutely ideal for a big group! We stayed there for my sisters hen and the large hall at the back of the house was perfect for games and food. The kitchen table also sat everyone and the rooms were spacious. The location can’t be beaten - The train station is right outside the door and the town is walking distance away. Everyone really enjoyed it!
Only point to note is that some rooms don’t have blinds so if you’re sensitive to light in the morning bring an eye mask!