There are turtles in these guys' amazing garden! My daughter is 4, and said that feeding the turtles was the best bit of her whole holiday.
Other than that, the garden is incredible, and more like Bali than Brixton. It is perfect to come back to after a hard day's touristing. There is a good gas BBQ that we had steaks on, and Bruno the dog likes his steaks too, and happily helped with the leftovers. Nick gave us some great advice about where to head to (Greenwich village on the Uber boat), and both Nick and Ben were very sweet to our little one and helped her feed the turtles and told her all about them. The flat was fairly small but completely suitable for us and the beds were v comfortable (one of them is huge!), and the kitchen had a Nespresso machine (v. important), and for London it was great value. It also backed straight onto the garden with a back door, and had its own front door, so we could come and go as we pleased! We had a lovely time, and will be back for sure.