We had a free walking tour with Iliya. The tour itself is just what you’d want – not too long, but not too short; takes you to all the main places and allows you to feel a lot more comfortable even if this is your fist visit (for us, it wasn’t, but still). Iliya was excellent: able to tell the story in an interesting way; perfect English; friendly, open, motivated and enthusiastic; had or quickly found answers to all our questions; explained things not only about the city, but about Bulgaria, also the association and the tours themselves; was prepared with interesting facts about the places we visited. I recommend this for all tourists.
Graffiti Tour (Iliya, as above): really awesome and goes beyond a normal tour of a new city. Shows you the artistic side of the city and it makes you see it differently than just a town with people, buildings and sites; great for letting you feel the spirit of Plovdiv. Iliya was once again very well prepared, enthusiastic, friendly – everything I say above. I firmly recommend this tour for anyone – if you only have time for 1 tour, I’d recommend this one as it makes you FEEL the city more than see it.