I don't think the person who wrote the caption has ever stepped foot in Havana or Cuba. One key reason why Cuba is so safe is that the government’s security is extremely strong and its police force innumerable. However, more importantly, the Cuban people are friendly and do welcome visitors. They also understand how important tourism is to their economy and are looking forward to more Americans visiting following the recent change in U.S.-Cuban relations.
Statistically speaking, Cuba is very safe, with the lowest crime rate in Latin America.
Shopping is not Havana's draw, and travelers should bring an adequate supply, even of such personal staples as toothpaste, deodorant and shampoo.
Most of Old Havana is eminently walkable - the best way to experience it. Traffic city-wide tends to be light by most urban standards, as few Cubans own private cars.
Now. If you mean weather,high season is also dry season, and Havana's limited hotels can quickly fill up in this November-April window, when daytime temperatures average in the low 80s.