Storage room (Hong Kong)

Hi,
I am looking for a storage room to store some items for few month.
I had a look on internet, and I saw some companies offering this kind of services.
As there are quite a few, I wanted to know if any of you had already used the services of on of these companies.
Do you have an idea of price ? names to give me ? or any information to take into consideration ?

Thanks for your help.

Véronique