SELECT T2.roomName FROM Reservations AS T1 JOIN Rooms AS T2 ON T1.Room  =  T2.RoomId GROUP BY T1.Room ORDER BY count(*) DESC LIMIT 1;
Find the most popular room in the hotel. The most popular room is the room that had seen the largest number of reservations.
[Schema (values) (types)]: | inn_1 |  Rooms : roomid (text) , roomname (text) , beds (text) , bedtype (number) , maxoccupancy (text) , baseprice (number) , decor (number) | Reservations : code (text) , room (text) , checkin (text) , checkout (number) , rate (text) , lastname (number) , firstname (number) , adults (text) , kids (number);