An island is a design feature within a kitchen. It is a single unit or a number of units grouped together to make a separate space where food can be prepared. It might also be used as a breakfast bar with stools. It’s an aspiration kitchen feature that many people want.
An island is good if you have a large kitchen with plenty of space. It will give you some extra surfaces, which are always welcome. You will have more space to prepare food and if you want, you can also make the island into a cooking area and have a hob on it.
Choosing an island may not be such a good idea in a smaller kitchen. It will take up space and isn’t a very economical use of the room you have. You should think about the design carefully and ask a professional kitchen designer to measure up.