Across from the house there are a lot of parking areas, offered by the company "Ampido"

You can book your parking area in internet under Ampido, parking "Am Salzmagazin 9"

Day price is 16,- EUR, and special offers for longer bookings.

In the extreme case, you have found no free parking here, still a little more expensive alternative: 

The German Railway offers around the Mainstation also convenient parking for 16,- EUR/day.

Address: Maximinenstrasse, 50668  

               Köln

Park duration: up to 1 week

Costs: 12,- EUR/day  48,- EUR/week

Payment:

 Credit cards(Amex,Visa,Master) at the grey machines, NOT at the black machines                                                                                  Payment in Cash only possible with coins, when overpaid no remaining money.