A Penthouse is the name given to the apartments or the units on the highest floor of a residential block or hotel. They can occupy one or more levels and are typically differentiated from apartments or duplexes because they have luxury features or occupy a more spacious floor space than their counterparts in the same building. Some penthouses have particular features like a private lift, 24hr concierge or a roof terrace with views across the city they are located in. Being located on the top floor of the buildings they occupy they offer more privacy and less disturbance for their residents. Of course, with these added features they are command a higher price and are harder to find especially in popular locations. The majority of penthouses in Qatar are found in The Pearl and some in Lusail in the new and luxurious Waterfront area developments.