Flat undergoing HIP soon. Would like to take opportunity to reno house. Looking for reasonably priced, clean and secured self-storage space for barang barang. Any recommendations?

Seeking self-storage space to declutter house before HIP. Heard the clean-up to the entire house after the toilets upgrading, is a massive task! Hence, planning to renovate the aging flat and clean up the dust in one shot.
Basically thinking of two separate storage spaces:
1. For barang barang with longer storage term (> 1 year); and
2. For furniture with short storage term (3-6 months).
Appreciate recommendations (economical, clean, secured self-storage) from personal experience, and what to take note of when renting such a storage space. Thanks in advance!