We had a great tour of the beautiful Spanish Royal Palace. I would highly recommend it. 1.5 hours is plenty of time to get the details, but you are allowed to stay inside longer if you need more time after the tour is complete.
Viator connected us with Pancho Tours for this tour and it was a not a good experience. We picked a specific time so that our tour would be in English only and when we showed up, that was not the case. The tour guide was rude and she didn't answer any questions and the entire tour was in Spanish as well as English so there was a lot of wasted time because saying the same thing in 2 languages takes a lot of time. When we questioned this, we were told by the Pancho Tours rep that all tours are in Spanish as well as the language booked and that Viator should know this.
We ended up leaving the tour and walking the Palace on our own with no guide.
I would not recommend Pancho Tours.
No help with finding the merting location which was far from the palace.
The guide spoke in English and Spanish instead of bringing two guides. It was a huge group and the level of information was very low. For kids, not for educated adults!!!!
It would be much more interesting, and worth the price, for the guide to offer information and background that isn't available elsewhere . Also, there is very little time to ask questions, perhaps because the guide must present everything twice, in two languages. Not the most effective arrangement .