This summer from EUR 64 in the nhow Hotel Berlin including breakfast

The nhow Hotel Berlin is located directly on the Spree near the Oberbaum Bridge and is normally not available for less than EUR 100 without meals. This summer, however, you can already spend the night there for just EUR 64 and breakfast is also free. Depending on the provider, cancellation is also possible free of charge. Sunday night is usually the cheapest.

Here you get to a sample date