bad week to be in Hamburg cos there was an iron man competition and lots of places booked out.
BO (unfortunate name, in English) was available and seemed reasonably located.
Fact, quite central but, unless you have a car or are willing to walk some way, or wait for public transport, it is not very convenient.
Location, next to a big second hand auto sales and repair yard, also not of the best.
But its close (2 stops on the U-bahn, when you get there) to centre of town which is OK if its not storming, raining or very cold.
The room was good - it's very new ... but there is not much around in the way of food or entertainment
As a base to leave in the morning and come back to at night, it worked OK