So, I really wanted to see Spb on foot and not by car and Maria was very accommodating. She put together a 6 hour(!) walking tour that was extremely extensive and really great. She is very knowledgable as well as funny and engaging. I learned a ton. I could not have been happier with how the tour went. She took me to a traditional Russian tart bakery and gave me a great restaurant to go for Georgian food. I would recommend Maria to anyone.