Just book it :)
We had a fantastic time in Pacific beach. The location of this place is awesome, close enough to walk to the beach, the store, and restaurants but also far enough away that noise isn't an issue with little kids.
This was our first vacation traveling with our baby, he was 10 months and had just started walking when we arrived. This place was perfect and had everything we needed.
I rarely consider going back to the same place I've stayed before but the next time we are in San Diego we'll try and stay here again!