Moisture in many homes is largely during seasons where neither the AC nor heat are run as both dry the air. You might get the same results regardless of where you put the dehumidifier. A dehumidifier pulls humidity out of the air which recirculates...so A cheap humidity gauge is helpful to compare rooms.
We have a large dehumidifier in our crawlspace that helps a lot (pumps out lots of water from that area), but plan to add a whole house one like this
https://www.santa-fe-products.com/product/santa-fe-ultra70-dehumidifier/
for the living area....as the climate is so mild that my HVAC almost never runs in spring and fall and the humidity is very high then.
__________________
74 Targa 3.0, 89 Carrera, 04 Cayenne Turbo
http://www.pelicanparts.com/gallery/fintstone/
"The problem with socialism is that you eventually run out of other people's money"
Some are born free. Some have freedom thrust upon them. Others simply surrender