Rent an apartment for a month in Moscow?

Hello!! I am going to Moscow for a month and I would like to rent a room/studio for the time I'm there. I've been cheking some websites but it all seems very expensive or very far away from the city centre. I was wondering if anyone knows how can I find a something for around 500 euro? I don't have a Russian bank account, so I would be paying cash (either euros or roubles, doesn't matter).

Thank you :)