Proper permissions for /root directory?

What is the proper permissions for /root directory?
for Host and for containers?
I found out that default permissions in Ubuntu for both is 755
Are there any cons to set 700 for /root directory?
I cant find any guidelines about proper permissions for special directories in linux with systemd onboard.

regards

You may find some information at the LSB, https://wiki.linuxfoundation.org/lsb/start
When systemd supports private home directories, things might be different.

The /root directory by default is already 0700.

Not true
Ubuntu 20.04 LTS
defaults to 755 for /root

regards