How to rent a flat in Moscow?

Hi all!

Does anyone know any good reliable agency? Or possibly some other tips for finding a flat quickly? of course it would be great to find a flat without agency, but in Russia there are too many аферисты so, possibly some people here have such an experiance, can you share it with me? :)

Thanks in advance!

How much did you want to spend?
Do you speak Russian well?
Do you look, speak, act like a foreigner?
What length of time do you need the flat for?
What type of visa do you have?