Database
db={comercios:[{_id:"5e181fed9fc1883a69797e3a",hotels:[{name:"Hotel Emperador",stars:4,price:1596,imagen:"https://i.ibb.co/RHYqxjL/hotel1.jpg",id:1},{name:"Hotel Sonesta",starts:4,price:2400,imagen:"https://i.ibb.co/kx06vbZ/hotel2.jpg",id:"sonesta"},{name:"Hotel Soratama",stars:3,price:1000,imagen:"https://i.ibb.co/hx0Txk6/hotel3.jpg",id:"3"}]}]}
Query
db.comercios.aggregate([{$unwind:"$hotels"},{$match:{"hotels.id":1}}])