Air BnB now has an "experiences" section where you can book things like walking and dining tours with locals. Or cooking or hiking, or biking, even boat trips. Seems to be a lot to choose from. I have seen small groups like this with local tour guides in my work neighborhood as I work among the traditional dried-seafood shops that are interesting to tourists.
Anyway, most are well under 4 hours and could get you some interesting local food that you would probably find difficult to order on your own- or even know where to look for it.
Right now a local walking tour is a good idea as bus tours or hop on and off buses may be blocked due to protests/tunnels closed down, etc.
Anyway, worth a look to get ideas on what you might like to do: