Since black is such a versatile color that basically work great with all other shades, it’s safe to say that black bar stools can look beautiful in any kind of décor as long as the style is the right one. These ones look pretty nice here in this basement.
If your bar stool area is nearby other chairs, you might consider coordinating the seating throughout the space. This isn’t to say you should run out to the nearest furniture store and buy a set of identical-except-for-height chairs and stools. But you could consider keeping one style element similar for consistency, such as the wicker seats in this photo.
For a more unusual twist, trumpet-shaped wooden bar stools (and matching bistro-height table) are an option. The shape is enhanced by the footrail that is only on one side which helps keep the profile slim. They’re great for a casual kitchen or bar area.
Once you got all measurements right, you need to decide how many stools you need. Figuring out the number is easy. You need to provide adequate spacing for people to eat, drink or socialize. A distance of around 26”-30” between the centers of the bar stools should be ideal.