Morro Bay State Park is a great place. Conveniently located across from a small harbor and next to a golf course. There are some hiking trails and is a very short drive to Morro Bay Harbor and Morro Rock. For some it is within walking or biking distance. Lots of restaurants to choose from. There is no sewer hook up but there is a dump station. There are a limited number of sites that have water and 30 amp electric. Does have showers and flush toilets that are fairly well maintained. Biggest complaint I have ever heard is about the price. Welcome to California coast, prices are high. Just the way it is.
If you have time a short drive away is Montana De Oro State Park. Some really great hiking trails and ocean cliffs or just check out Spooner's Cove (expect it to be windy and cold). Avila is also very close and has a nice beach and boardwalk area. Cayucos is a short drive to the north. It is a smaller less developed beach town. Highly recommend the Brown Butter Cookie Company (they give free samples :)and they are good).
Bakersfield has a few options. Contrary to what Executive posted Bakersfield RV Resort is far from downtown. It was built on the site of an old movie drive-in. Yes there are some train tracks nearby. It is also in the same area as the auto mall so yes there are lots of car dealers across from it. Camping world is also across the street. There is an onsite bar and restaurant that is actually pretty good. One of the better hamburgers in town but they also have a full menu.
River Run is a newer place that borders the Kern River or more accurately right now just a riverbed. It is actually closer to downtown than Bakersfield RV Resort. Highway 99 and Highway 58 (to the west) are both right there. Access is easy but kind of have to drive back behind the hotels and through a bit of industrial area to get to it. As mentioned there is easy access to lots of things. As discovery4us pointed out Costco as well as several restaurants are within walking distance. Buck Owens Crystal Palace is close. If you are a country music fan it is worth a visit but it looks like they will be closed while you are there.
I am not familiar with Orange Grove RV but it does seem to get a lot of good reviews from folks here. Seems that a lot of people use it as a stopping over point before heading east over Tehachapi. I'm sure some of the people who have been there will chime in.