We compared the prices and amenities of standard rooms on Royal Caribbean, Norwegian, and Carnival cruise lines - here's the one with the best bang for your buck

Square footage: 135–291 Number of beds: 3-4 Type of bed: Two lower twin beds that convert to a queen and two Pullman beds Basic amenities: TV, closet, vanity Inside staterooms on Norwegian cruise line range from 135 to 291 square feet. At 142 square feet, the Sail Away stateroom on the Norwegian Dawn (the sailing ship for the selected itinerary) is large enough to accommodate two to four guests. Prices start at $399 and range up to $569 depending on interior location. For an extra $110, you can choose one offer among a variety for a special package: unlimited open bar, shore excursion credits, specialty dining, WiFi, or friends and family (adding one to two extra guests in your stateroom for free). In addition to a TV, closet, and vanity, the stateroom also comes with a hair dryer, telephone, and refrigerator.Square footage: 185 Number of beds: 2-4 Type of bed: Two twin beds that convert to a king; some cabins have pull-down beds for three or four people Basic amenities: TV, closet, vanity, desk, couch, dresser Carnival's inside staterooms are 185 square feet on average, beginning at $414 per person. For $7 more per person a day, you can upgrade to a porthole stateroom with an ocean view. Some also come with connecting rooms and sleep up to five guests. The staterooms include a few more amenities than Norwegian: desk, TV, closet, dresser, vanity, and sofa, depending on the room. It also includes a 24-hour room steward, television, telephone, and individual climate control. Square footage: 160 Number of beds: 2-4 Type of bed: Two twin beds that convert to a king; some cabins have a double sofa bed Basic amenities: TV, closet, vanity, couch, dresserRoyal Caribbean has three different inside staterooms. For $353, the standard stateroom has two twin beds, a vanity, and sitting area. Inside staterooms that accommodate up to four guests have a double sofa bed in the sitting area. For $30 more, at $383, you can upgrade to an interior room with a virtual balcony — a high-definition 80-inch screen connected to a live camera with audio outside the ship — or an interior room with an extra seven square feet and a view facing the inside of the ship. For this itinerary, the view is of the Royal Promenade. In addition to a flat screen TV, it has a hair dryer and ample drawer and closet space. Norwegian, Carnival, and Royal Caribbean all have their strengths, but some outweigh others. Carnival may be the priciest on the list, but when you look at it from the perspective of price per square foot, the cost of an interior stateroom on board is only three cents more than Royal Caribbean and Carnival — and you're getting more square footage and standard amenities than the other two. With Carnival, you're getting a lot more bang for your buck. However, if you're looking for a more cost-effective option, Royal Caribbean is more affordable than both Carnival and Norwegian. While it doesn't have as many rooms or amenities as Carnival, it does have more than the room on Norwegian Dawn, at the second most affordable price. And that remains true even if you upgrade to a room with a virtual balcony or promenade view window. At the end of the day, it really depends on what's most important to you when it comes to your cruise room.

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We compared the prices and amenities of standard rooms on Royal Caribbean, Norwegian, and Carnival cruise lines - here's the one with the best bang for your buck

Norwegian: $399 at $2.80 per square foot

Norwegian offers a bargain package upgrade.

Carnival: $414 at $2.23 per square foot

Carnival offers ample amenities.

Royal Caribbean: $353 at $2.20 per square foot

Royal Caribbean offers various room upgrades with window options.

Which one is the best?