http://www.archivesmadeeasy.org
Hosted by the International History department at the London School of Economics and Political Science, Archives Made Easy aims to empower historical researchers of all levels and make unrewarding research trips a thing of the past.
The archives are reviewed by researchers, see e.g. for the Bundesarchiv Koblenz the “Easy Archive Tip” by C. Germond, August 2005
http://www.archivesmadeeasy.org/pdfs/germany/Germany_Bundesarchiv_Koblenz%20_August2005_Carine_Germond.doc
An excerpt concerning Italy:
If you want to undertake research at the ASMAE, you must be extremely patient and be prepared to the lengthy, nonsensical and bureaucratic procedure of the archive.
Interesting website!