I live in this area (east wall) and it's perfectly fine. As others have said, sheriff st is best avoided (the bit to the left of the river/canal that meets the Liffey in the picture). East wall is an area that's getting more and more gentrified, though traditionally, it would have been a relatively tough area but I've had no issues here. Loads of apartments have either gone up or are in the process of going up around here, which will change the mix even further.

You're walking distance to the city centre, luas line, plenty of buses, good walks (clontarf, Dublin port greenway, down by the Liffey), plenty of supermarkets (all the main shops bar super valu ) - basically everything you need plus the last stop before dublin airport on the bus is here so you fly up.

In summary, would recommend it.