What is the difference between a studio and an apartment?

A studio is always one living space with sleeping places for 2, 3, 4 or more people, depending on the size of the studio. There is a bathroom in every studio with a shower or bath and a toilet. Every studio also has a kitchenette consisting of an electric cooker, a fridge and in some cases a dishwasher. The studios usually have a balcony.

An apartment is different from a studio because the living space always consists of at least two separate areas. In every apartment there is a bedroom and living room functioning as a living and sleeping area. 

If it is a six person apartment there is usually a bunk bed in the hall. An apartment with one bedroom and a living room is called a two room apartment. An apartment with two bedrooms and a living room is a three room apartment etc. In every apartment there is a bathroom with a bath or shower present. Often there is a separate toilet (otherwise there is one in the bathroom). Every apartment has a kitchenette with an electric cooker, a fridge and in some cases a dishwasher. The apartments usually have a balcony.