They do all the paperwork for you. They don't handle cash so I don't see any downside apart from the fee.
The majority of reputable European banks operate to a code called "Know Your Customer", in some countries this is by law and in others it is self policed. One of the main principles in that code is that the bank actually meets the customer before opening an account, which is why DB and others are unwilling to open accounts for people, unless they present themselves in person. The fact that a bank would be willing to breach such principles in this way would give me cause for concern if I was thinking about putting my cash on deposit with them.
The website also fails to point out that the bank in question is actually the subsidiary of an Italian bank and not in fact a German owned bank as suggested by the website.
And while the German subsidiary may well have a T1 ratio of 17% as the website states, the group T1 is much lower at about 9% and there are worries about it's exposure to the Greek situation. At 9% that would put it at about the same level as BOI and well below the other two Irish banks.
Now I know that things like T1s are not on most people's mind, but we saw again last week, just how important that ratio is, when UBS was hit for 2b by a rogue trader in London. With a T1 of about 16% UBS was in a position to take such a hit where as banks with a much lower ratio would be in serious trouble.
If it was me, I would go with DB, even if it means a trip to Germany at least that way I've have peace of mind that I was with a true German bank.
Jim.