Help Finding Good Locality For Relocation

Hi ,

we will be moving to seattle area this summer .
i have a 2 yr old who goes to day care.
looking for a apartment in a location which has
1: stores nearby both like costco ,walmart and indian groceries
2: good day cares closeby
3: good public transit to downtown seattle ... would be fine with 45-60 mins of commute in public transit
4: good pediatricians nearby

Any suggestions on locations/apartments/communities etc please ?
and also websites where we can find the listings please
thanks