Same total budget for flights and hotel. Which combination do we book?

Option B is the stronger combination because, at the same total budget, it better protects the factor that affects the whole trip: rest and recovery. A daytime flight avoids the poor-quality sleep, fatigue, and possible jet lag of an overnight flight, so the trip starts with more energy and better decision-making. The bigger hotel in a quiet neighbourhood supports good sleep every night and offers more comfort, space, and calm than a small central hotel, which may be noisy or cramped and can compound fatigue. The 20-minute metro ride is a modest, predictable daily cost, and its downside is outweighed by the cumulative benefit of arriving rested and sleeping well throughout the stay. Option A's central location is a real advantage: it reduces daily travel and maximizes time on the ground, and it could be preferable for a very short trip or for someone who genuinely sleeps well on planes. However, because the total budget is fixed and equal, the choice is not about which bundle is cheaper; it is about which yields more overall utility. For a typical trip length and traveler, the time saved by staying central does not compensate for the lost sleep, smaller room, and recurring noise or comfort risks. Therefore Option B offers the better overall experience under the same budget.