We stayed for two nights in the Bambi caravan at the Metro, which was great fun! The entire hotel is quiet and very funky with antique furniture and games scattered throughout.
The only hiccup we experienced was that we arrived at 11.30am to find the hotel locked and unstaffed. We weren't made aware that the office is shut between 10.30am and 2.30pm - lucky for us a really friendly guest helped us out, or else we would have had to sit out the front and wait.
The Bambi was good for a laugh but it was very tiny - it contained a toilet with a shower over it which made bathing interesting. The little kitchenette had a stove top and mini bar, but there was no cutlery or kettle provided. I heard they were about to upgrade these caravans soon with larger models, but if not I would recommend staying in an actual room!
In the morning drip coffee was made available in the main building with a tray of sweet bread, and there is a larger fridge you can use to store your own food if you prefer - this hotel is really self-serve which made for a unique experience.