Queen-size mattresses are the most popular choice for couples, offering a comfortable balance of space and practicality. Measuring 60 inches wide by 80 inches long, the queen size fits well in most bedrooms while still providing ample room for two sleepers. It’s also a great option for solo sleepers who like extra space to move around. Queen mattresses are versatile, widely available, and suitable for guest rooms, master bedrooms, and smaller apartments.