Why not.. Or try Cologne instead.
If you end up in Cologne try TruPlayaz aka Ebony Club
Ebony Club , Nachtflug (funny door), Petite Prince (check website. bit of a dive) .
For NachtFlug be at least smart casual.
If you want to travel cheap look at ride sharing or coach companies.
Share your journey with BlaBlaCar - Trusted carpooling
FlixBus → Günstig mit dem Fernbus reisen
But you cannot take larger bags into the bus so travel light.
The main train website in Germany is
bahn.de - Ihr Mobilitätsportal für Reisen, Bahn, Urlaub, Hotels, Städtereisen und Mietwagen . The night trains are slower but much much cheaper. ICE's are the fastest but they cost a lot more.
Night deals are listed here -
Reisen über Nacht .
Nacthzug == Night Train.
Do not sign up for the Bahn Card (The Train discount card) - a lot of tourists did in the past without knowing it was a subscription contract with auto -renewal.
Check out this link. This is a good website in general for english information about Germany:
How to cancel a BahnCard
In general be careful about signing up for any deal in Germany as they have pretty rough terms and sales people are often not very clear about the deal.