Upvote:2
For once, I think it's possible to give a general opinion. EUR 860 is slightly over the level of welfare benefits (revenu d'intΓ©gration) and it's lower than the minimal wage for full-time work (between EUR 1000 and EUR 1400 depending on age). Median (after-tax) wage is EUR 1800.
But rent is a big item so your allowance should provide a comfortable income if you don't have to pay for accommodation out of it.