Passage: On 25 August 2018, a fire broke out at the Beilong Hot Spring Hotel (Chinese: 北龙温泉酒店) in Harbin. Located in the city's Taiyang Island (太阳岛) resort area, the four-storey brick-and-concrete hotel mostly accommodates domestic tourists and was hosting over 100 people at the time, many of whom were visiting for an annual marathon. The fire resulted in 20 deaths and 23 injuries.

Question: How many storeys is the hotel?
four