I went about 6 years ago. Loved it. I hired the tuk tuk driver who hung out at the hotel for three days. I think he asked $20 a day for three days.
He would meet me at the hotel at 7 am, and I had him take me to the temples. He was available all day. He would park and wait while I was sight-seeing.
In town, the restaurants would only take USD, and it had to be crisp unfolded. It got so nuts I verified my money was usable BEFORE I ate. If you eat at the hotels, it is normal to put it on the bill or pay cash, and not such a requirement to have perfect money. Same with the shops, dollars preferred if big ticket items.
I spent 3 days, and went to the smaller temples first and had them mostly all to myself. There are 8 or 9 very cool ones in the complex. Outside the complex there are 20 or more that are un-restored and very cool. The main building is busy all day, and sunsets there are fair, nothing to "must-see", though a few thousand were at the big building at sunset.