Tāmen zhù zài Huìquán Guǎngchǎng fùjìn de jiǔdiàn.
They stayed at a hotel near Huiquan Square.
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Primarily a place name in Qingdao 青岛 (汇泉湾/汇泉广场/汇泉浴场) and the name of various hotels and brands derived from it. Outside those contexts 汇泉 is rare — treat as a proper noun and check context before translating.