There are 2 different types that work better/worse depending on the temperature.
We bought one of these recently
Desiccant Dehumidifier ECO DD122FW Simple with Ioniser & Silver Filter - 7L / Day, Damp Remover https://www.amazon.co.uk/dp/B00474K8SY/ref=cm_sw_r_cp_apa_i_1xrLCbF1BJTJW
This type work better in colder conditions.
It can be useful to get one with a drain hose that you can then connect direct to you sink waste so that you don’t need to empty it.