A loggia is an open place on the side of a house with a floor and a roof, but not a full wall on the open side, so air and light come in. In the meaning you are learning, it is built on the ground floor, though pictures of old Italian palaces sometimes show a loggia higher up. It is an architecture word, a little fancy. In everyday English most people would say porch, veranda, or gallery instead. The word still feels Italian, and it is used when the building is meant to look a bit grand or old-European — not for a small concrete balcony on a flat.

涼廊、敞廊。台灣騎樓是騎樓，不是這個。