Bizarrely, out of the box there is no link to the Workspace within the Office clients. This needs to be added manually.
To do this, click the windows Icon (The old start menu), then on your name. This will open an explorer window showing several folder Icons. Simply right click Workspaces and drag it onto the Favorites folder, Then pick, ‘Create Shortcut here’.
Thats it, you can now easily browse into your Workspace folders from within the Office application file dialogs.