Berlin Spandau Haselhorst Marina

Tucked along the Oberhavel river in Berlin's Spandau district, this marina puts you right on the water with jetties, a fuel station, and a yacht club on-site. It's a surprisingly calm escape given how close you are to the city — Haselhorst sits just northwest of central Berlin, with houseboats and motor yachts available from around €68/day if you want to get moving. Ice and internet access round out the basics, so you're not roughing it.