Consider moving your the table from a horizontal position to a vertical position. This creates a booth-style effect.
Don't go too matchy-matchy. In this vignette we used four black chairs and one accent chair at the head of the table. Mix textures like these slick black chairs with one cozy hide chair.
Consider the use of multiple pendants over the table. Add a table lamp! This adds style and ambiance and warms up the table.
Play with colour and pattern and add a touch of whimsy. Make it feel intimate and welcoming.
Have fun with pattern and texture like this striped rug layered with black cowhide.
Conisder a playful and fun wall treatment like this one from Rollout. It's interesting, unexpected and playful. Black pushes the cozy look one step further. Framing the wallpaper makes it feel like art!