I haven been with Atjeu almost a year.
(If WHT needs to verify this, no problem - i will provide an IP and Atjeu can confirm this).
I must say that Atjeu is the provider i been with for the longest time ever.
I am using Atjeu for hosting my vbulletin forum + few other websites.
Setup was done in time they promised without mistake!
They also provided me a free 100 mbit port upgrade !! (Thanks Atjeu) which i really needed at that time, and now too.
This is the fastest support even seen.
They respond to their ticket within 1-2 minutes.
Support is very knowledgeable (they know what they are doing).
This server is unmanaged, but every time i contacted them about any issue\question i had, they actually helped - and never charged me for that!
I did not experience any downtime.
I have NAGIOS monitoring my server from 2 different locations.
At the time i was looking for server with Cpanel - Atjeu had the (one of) cheapest Cpanel licenses $20.
I am still their happy customer (been from day 1) and i will stay their customer for a looooong time
It can be tough. When we used to collocate all of our servers at another data center this was almost impossible. It was only when we got our own facility and fully staffed it 24x7 with our local staff that we were able to do that consistently. Also, since we don't have 50,000 servers, it only takes our techs a few minutes to go from our NOC to the server location and find out what is going on so that helps a lot too.