The boat was 20 minute walk from the location in the listing outside of the area specified on the map. So it's worth checking with Anna in advance the exact location of the boat (it seems that it can be anywhere around Brodway Market, Victoria park or Mile End Park). In our case it was Mile End park which, after several years of living in East London, I would not describe as "trendy" (in other words, "Cosy House Boat in Trendy East London" might be a bit of a stretch).
The listing should also probably include the fact that the boat height is around 180 cm / 6 feet because some people might not be able to fully stand up in the boat.
On a positive note Anna was very helpful and responsive throughout. There were good introductory videos on how to use the boat. We had no problems on the boat but it was good to know that you can always ask for help. The boat was very clean and tidy with handsanitiser and disposable cutlery.