It is safe blockchain . Actually i am using it and i am planning to open more wallets . But i think that is a cloud wallet and if they are losing their servers burning etc , practically our money are done
Also i got some problems with blockchain last time , they have diminished the mining fee and my transactions were stuck 8 days . I tried to push my transactions , i sent to support mails but no help , and i had to wait 8 days for a confirmation . So sometimes is good sometimes is bad.....