This is a charming little vegan raw food cafe. It's in a quiet area surrounded by schools and houses, and in a building which also has small business offices, but easily walkable from Ikebukuro Station. The map location is correct (if using the Android App, else instructions listed here). The meal was exquisitely presented, and very healthy, and staff were very friendly and explained what everything was (in Japanese and some English). Being an upmarket raw cafe, portions are small and prices high, so this is more somewhere to go for the experience or for a detox than for a solid meal, however I did find my meal surprisingly filling for what was mostly vegetables (uncooked to perfection). The dessert, made from peach, cashew nuts, walnuts and coconut oil was amazing. This is definitely worth a visit!
Cons: expensive (~2500Yen/set meal), a bit of a walk (but a pleasant one)