Flat or apartment?

What is the residential apartment? For most of us the term "apartment" means a large apartment, with luxurious interior design. But it turns out that that the apartment was filled with the definition of a "suite" must meet several important conditions.
The apartment is, simply speaking, luxury apartment. But is? The term "apartment" in Polish, however, is often abused. Probably due to the direct translation of the English language, where the word "apartment" means what in Polish "dwelling". It turns out that the spaciousness of the apartment is not the main feature characterizing apartment. In the case of determining whether the luxury apartment is an flat, but still remains whether the dwelling is a favorite saying of agents of real estate: location, location, location ...
What is, therefore, a luxury apartment?
The apartment is sometimes also often confused with the apartment hotel, which consists of 1-2 rooms with bathrooms and a living room, with a kitchenette. Apartment dwelling must contain a separate kitchenette or full kitchen. For the term "apartment" it consists of but a lot more features, all of which must be met.
What conditions must, therefore, must meet the residence apartment to be able to say that this apartment?