I was in this place on Dec 27th. I arrived fairly close to their closing time and was told there wasn't much choice left for me as a vegan grade vegetarian. Only thing available then was cherry tart so I had a slice.
The setting is very nice in an area under very nice arches. No issues with the ambience and as would be hoped, the guy serving who exactly what I meant when I asked whats vegan.
I am not overly experienced re this venue but there were a couple of other things that match the perception I already have of Henderson's from their other place. Firstly the would was lovely. While very nice it seemed a little over priced for what you get for your cash.
It wasn't much past 4 pm when I went and they were gearing up for closing down. I'm unsure if that's because it was in between Christmas and New Year.
Location is a good choice. This seems to be the only all vego eatery around Edinburgh's West End and fills a nice little gap.Pros: Vegan vego friendly, Central
Cons: A little pricey for what you get