Store 2 pieces for 500k for upto 1 month.
Each extra piece just 225k/month. 
Communal storage, your luggage is placed on shelves in a/c. Totally safe, clean & the most affordable option.
Please note this is in our Nha Be location:
https://maps.app.goo.gl/TnWA8bXoHX3vEqDo6