I would also drive around at various times of the day to see how it feels to you. Everyone is different so you need to get out and check it..
Safe is a relative word, so none of us can answer what you think is safe.
Go hang out around the area. Ask the neighbors. Stop a cop and ask them.
Call the PD and ask for the community resource officer and ask them.
Go to the school and ask for the school resource officer or SRO and ask them.
They might know better than anyone.
I don't see that one still for lease though. It was added to Trulia 180+ days ago, so if it is still for lease it would surprise me or tell me it's not the best place in the world for the price.
There is one in an area I like, but 1 bedroom.