Many seating, long tables, couches along the wall & some space around, does the trick for simple socializing. I like when it is plenty of space without the feeling of a cramped environment. It’s simply nice with floor space, when possible. It is not always necessary with enormous rooms, either. You can always refine the use to suit the purpose. If you have a dining area, let it be a dining room & make space for many. Put two tables together for the space & mix different chairs to make it less formal. Try to keep focus on the main function to avoid a messy impression or environment.
We all have things that requires storage, which also should be easy to use when necessary. Everything doesn’t need to be visible. Especially when there are loads of clever usage of walls for open or closed storage. Also stylish beds, sofas, bookshelves & patio furniture to use for convenient storage. Endless possibilities, if you so wish. I will not dwell on the subject, but more show attractive solutions with long seating. Whether it’s sofas, dining table or the like. Just because I am so childishly fond of that.
Take care / Marie