Pantoll is a pretty campground located adjacent to the entrance to Mount Tamalpais.  You can hike to, bike to, take the bus to, or even drive to this campground.  If you choose to drive, just know that it can be impossible to find a place to park on busy weekends (you'll need to drop your stuff off, find a place to park along the road, then come back to park in the evening when the parking lot clears).  We hiked in.  On a weekend night in March, only four of the 16 sites were taken so we had no problem nabbing a spot.  The campground is situated across a steep-ish hillside.  Water spigots are spread out among the sites, but all the bathrooms are located down the hill near the parking lot.  Each site has a fire pit, picnic table, and a flat spot to pitch a tent.  Sites are fairly close together in bunches (for example, 2, 3, and 5 were close, 6 and 7 were close, but there was a bit of space between the groups). Firewood is sold at the ranger kiosk but they have limited hours. Some spots are larger than others, and very few can accommodate a house-size tent (you know what I mean - and no judging, I have a house-size tent for car camping).  We had our 3 person backpacking tent with us and it would have fit in all the sites.  Sites up the hill require a bit of a hike-in but are farther from the road noise and busy parking lot.  There is one dishwashing station near the bottom.  

Pros: 

- Location.  You can hike anywhere from this campground.  Down to Muir Woods in less than 3 miles.  Up to Rock Springs, Bolinas Ridge, and Mount Tam.  Down to Stinson Beach.  I could spend a week here exploring all the trails.

- Amenties.  Dishwashing sink, many water spigots, food storage lockers, fire pits, toilets that flush.  And Wifi from the ranger kiosk (squee!!!) which we appreciated to check the weather and bus schedule (very poor Verizon signal).

Cons: 

- Noise from Panoramic Highway.

- Busy parking lot with lots of people potentially moving around the campground (especially the lower sites). 

- No reservations: FCFS only.

Overall I'm really happy I finally got to chance to camp here and would recommend.