From Longman Dictionary of Contemporary Englishteahousetea‧house /ˈtiːhaʊs/ noun [countable] DFDDLa special house in China or Japan where tea is served, often as part of a ceremony
Examples from the Corpus
teahouse• Afternoons ended at the Gundy, the school teahouse, a short walk up the hill.• And needless to say, in the tiny teahouse I was myself the proverbial bull in the china shop. 