I was meaning to try this place for a long while now, and now that I have, I'm sorry I waited so long. Unfortunately it also means that I now can't relate to all the endless hype over Kuumba du Falafel (which I have visited several times, and also reviewed)...Vespera is so infinitely better that there is just no comparison.
The dishes are absolutely perfect here...super-fresh delicious vegetables, great hummus, and the falafels themselves are wonderful, and I found them less heavily fried than most other falafel places. But aside from falafel, they also serve other dishes, like vegan Pad Thai, which I also found amazingly good. The prices are also very reasonable.
The atmosphere is also one of the nicest I've encountered at any vegan place anywhere in Japan...spacious, warm and cozy, with a mix of tables and tatami seating, nice music, and just a gentle vibe...perfect for taking someone in the evening. I love the feeling here. (This again, comparing to Kuumba...NO comparison.)
They also have menus (and service) in English, and the staff is very nice. And the location is also easy to get to, in Koenji, one of my absolute favourite neighbourhoods.
I didn't expect it before I went, but Vespera's is easily 5 stars and has become one of my favourites...without a doubt the best falafel place in Tokyo, and one of the best veg restaurants in Japan. I don't often say this but Vespara is all but perfect, and totally worth going out of one's way for. I can't recommend it enough.