The Quest Penrith hotel seems very new and I very much enjoyed my stay here. The studio apartments are a little larger than larger hotel rooms but are nicely laid out. There was a small kitchen (fridge, two burner stove, oven, and sink) along the wall near the entrance that had service for two people and enough pots and pans to cook dinner. I particularly appreciated the fact that it included a French press coffee pot, kettle, and extra utensils like a corkscrew and scissors. The bathroom was a good size as was the bedroom which had a small table for dining.
I found the staff at the Penrith to be really helpful...both before my arrival and during my stay. Uniformly, they answered questions, pointed me towards nice restaurants and shopping, and helped with some specific problems.
The hotel is located right next to the train station and a quick walk to the Westfield mall with lots of shops and restaurants. If you are driving, be sure to arrange for a parking spot before you arrive. The garage is small and can fill up, and there is not a lot of on street parking. Parking is AUD 20/night which is quite reasonable for a covered garage, but again the garage can fill up so BOOK A PARKING SPOT AHEAD.