Benchmarked strictly across TripTiming's 5 empirical pillars: Crowds, Weather, Vibes, Prices, and Safety.
Rome emerges as the optimal May destination with an overall TripTiming Index of 59/100 vs 50/100 for Florence (+9 point advantage). Rome experiences more manageable visitor density and shorter landmark queues (carrying capacity score 27/100 vs 17/100 in Florence). Visitors also enjoy vibrant neighborhood street life. While Florence retains an edge in Civic Safety (70/100 vs 57/100), Rome's commanding performance in Space & Crowds secures the overall May recommendation.