This study investigates at online complaining behavior targeting six different hotel attributes to determine whether there are distinct patterns of behavior exhibited by guests visiting different classes of hotels. The hotel attributes given focus include: (a) Service, (b) Cleanliness, (c) Room, (d) Sleep Quality, (e) Location, and (f) Value. In total, 353 hotels with 2,020 usable individual complaining reviews were collected for the analysis, which was conducted using a manual coding approach. Results indicate that online complaining behavior varies between different classes of hotel. Guests of high-class hotels are more likely to complain about Service and Value, while guests of low-class hotels are more likely to complain about Cleanliness, Room, Sleep Quality, and Location. This study contributes to the realm of hotel management by providing a better understanding of how customers from different classes of hotels are likely to perceive different hotel attributes.