Are there any seasonal demand differences in renting furnished housing?

I work to rent furnished residences of certain standards throughout Beşiktaş.
In my conversations with property owners, they ask whether there is a seasonal change in demand level.
Beşiktaş is the region with the highest purchasing power in Istanbul. Moreover, it is a center of both social and commercial life.
Therefore, the demand for living in Beşiktaş is generally strong, both at home and abroad.
However, it is true that there is a relative slowdown in tenant demand during the winter period.
Especially spring and summer are the periods when the demand for furnished rentals increases.
Of course, the content of the marketing activities is always an important criterion in increasing the speed of finding the right tenant.