If you prefer to go alone, allow me to offer some few word of advise to avoid paying more than you should be, and the part to avoid also, if you are not wanting to be victim of theft or so on.
I say not to scare, it is most beautiful city, but all citys have bad areas. If you find you are having problem, just telephone and I will fix for you.
[Eggsy]
You should come to try the language on some new Russians. Let us order food and drink.