When we visited the palace the lady at the ticket counter could tell us that it was 'closed today'
The lady was not able to tell us which days it would be open, just that it was closed some days a week. Advertised as a big tourist attraction we found it strange that it was closed on a Wednesday in the middle of the summer. We traveled quite far to see the palace.
As we didn't get in, we can not tell if the palace is good or bad, but the service and the information is not good. If you plan to visit, be sure to call first so that you know if they like visitors that day or not.