Hi ya bud. What hotel did you stay in any recommendations 
l mentioned it in my original post, it was a 4 star hotel and was immaculate

Surprisingly, it was only £35 PN, this was a Before Season promo in March 2017, l have looked at the prices intermittenly since and are expensive

unless they are running a promo.
The Park Inn that Steve2 mentions looks good as it is right in the heart of Alexanderplatz and relatively cheap but this depends when you go.