My partner and I have just returned from Budapest and did this tour on our last night, my only negative comment is that I wish we could have done this earlier in our trip!!
The tour was very interesting, this was not a boring run of the mill tour with the guide talking at you from a pre-written spiel. Attila is someone who clearly loves his city and knows the area well.
This is not a bar crawl and it's not a lecture on the area, it's like being taken around the area by a friend. We did visit ruin bars, coffee shops, boutique shops (no pressure to buy items, this is not one of those sneaky sales tour trips!) and it was tailored to what we wanted to see on the night.
We did have a couple of drinks on the tour (craft beer and a coffee) and we did stop at what looked like a delicious street food place, but unfortunately weren't hungry enough to eat!
I would highly recommend this tour, it was interesting, informative and a great night out.