cex.io are they good ?

I am in a quest to start my cryptocurreny trading, but unfortunately I live in a country where most of the famous exchanges (Coinbase, Kranken) does not seem to be working. I have an international Visa that I can use to deposit funds.

I found Cex.io to be quite user friendly and I think it will let me deposit. So I wanted to know have any one of you ever used it ? Is it safe ? how is is the reputation ? I wanted to buy ETH.