The hotel has 2 buildings. The one reviewed by Goldorak is the extension building at the back. The original building is rather dated. You can see the pictures on my blog.
The rate for the car by the hotel is above the normal standard price. Well it is still consider cheap for the foreigners.
Do visit Taman Sari which is water castle behind the Keraton (Palace). I found it very interesting place.
Also Ratu Boko temple is a must visit place during sunset. It is just 15 minutes away from Prambanan. I found this place is more interesting than Borobudur at sun rise (also I hate to wake up so early during my holiday).