VOICED : Love is in the air in Japan

Love hotels in Japan offer private rooms for short stays, providing discretion and unique features like large rooms and bathtubs for two. These hotels are economically significant, generating $40 billion annually. Historically, they gained popularity post-WWII due to crowded living conditions. Today, they offer a convenient escape for busy couples, especially during peak times like Valentine's Day, though reservations are not accepted.

What factors contributed to the popularity of love hotels after World War Two?

Why do couples prefer love hotels according to the text?