Definitely worth the stay and definitely as described.
I was overall happy with everything, but I think it's important that everyone knows what they are getting themselves into.
This space worked exactly as described and I would have stayed longer if permitted... But again, read before you stay as I have AIRBNB'd quite a lot and I know AIRBNB guests don't often read the full description.
The space is big for what you'll find in Berlin (nowhere near the same price), the expectation is to clean after yourself before checking out (helps keeps costs down), and shut the heater off before you go (keep costs down).
All in all, I enjoyed my stay and would stay again.