As Baldwin Park is a small city, the best way to get around is by car. Renting a car for the day would cost around $50-$60 and would take only a few minutes to get from place to place. Some ridesharing services such as Uber and Lyft are also available.
If you have more time, you can visit the Santa Fe Dam Recreation Area which offers fishing, boating, and hiking activities. If you have less time, you can skip the Sweet Orchard Resort and Spa and spend more time at the other locations.
The Los Angeles International Airport (LAX) is the closest major airport to Baldwin Park, located 33 miles away. The Bob Hope Airport (BUR) in Burbank is also an option, located 29 miles away.