There's one near the station in Wedel, just on the outskirts of Hamburg. Stocks a lot or Marklin and Fleischmann, 30 second walk from Wedel S-bahn station. Wedel is the westernmost point of the S-Bahn, which in itself is very cheap. Its also customary to hand any day tickets to another person once you've used it.

I went to Hamburg last year. Lovely city. Pre book the Miniatur Wunderland tour in English (unless your German is up to speed). The tour is worth it. Also arrive early. Is it a school holiday? if so very early.

Other things to see are the tunnel and St Micheals Church. The Bunker looks interesting but I don't think you can get in.

I've found two almost downtown (one near Hamburg Hbf), and one just two stops with a change from U-bahn to S-bahn. So in that respect we're sorted!

Our German is up to speed (Dutch & Austrian/Kiwi) and we can translate for the third (French, with a little German), so we're going to bother...

Meanwhile I've figured out why the Mh6 keeps shorting. It's a combination of laying the track quickly and the length of the 0-8-0. I should have used the grinding disc to make sure the track is completely level.

I hope to have some footage of the problem on the weekend!