My brother and I did this tour- it was just fantastic! The horses were well-behaved, the landscape and views were just breathtaking, and Marcell himself went over and above in making sure we got what we wanted out of the experience!!
He was also very accommodating of our dietary restrictions- the hungarian version of ratatouille that his wife cooked for us was just delicious! I definitely recommend this tour to anyone looking to get out of the city :)