Stephen H.
Yelp
This place gets a solid "meh" from me as a museum. For 5 euros, you get about what you'd expect but nothing wows me. If you're looking for something to do during the day to kill some time, this would be a decent place to spend it where you can go from 30 to an hour. They also had a free exhibit downstairs from the basement if you're looking for something quicker. Not sure if that's regular or seasonal, but you can ask.
Most of the place is antiques / art pieces, so if that's your thing than you should probably stop by. One of the most interesting pieces is a coin believed to be one of the original silver pieces Judas was paid to betray Jesus (of course no way to prove that, but still neat). The tour guide noted that many people pay 5 euros, go down and see the coin and then head out (which would be my recommended option for non-antique lovers).
I happen to arrive right as a tour was leaving. After the admission price, the tour is free (I think it goes daily at 11:30AM) but I'd honestly skip it unless you're really into antiques/art. The tour guide was extremely knowledgeable almost to a fault. Stopping at every individual exhibit and giving a overly lengthy explanation and dragging out over too long. I was told the tour would last an hour, after an hour and a half I had to bail, but it was still going! Perhaps that wasn't the normal tour guide?
So long story short - unless you're wild about antiques you could easily skip this. But might be cool to just see the coin and browse around on your own for a bit. A solid "okay" from me.