What does the standard room of the hotel mean? Who can explain? thank you

Standard rooms refer to the double private bathrooms in three-star to five-star hotels, and the double private bathrooms in each hotel must reach more than 75%. There are two beds in the room, and the accommodation guide is on the table. There should be central air conditioning, refrigerator, desk lamp, floor lamp, sofa chair, kitchen utensils for putting quilts and clothes for guests. The toilet must have a toilet, a big bathtub, a shower head, a washbasin, a bath towel, a towel, a comb, disposable toothpaste and a toothbrush. This kind of room is called "standard room", also called "double independent standard room".