Take the Metro to Kulturne Park, a short walk and you stand in front of Tolstoy's old home.
Walk around, preferably with a guiden tour, leran about Tolstoy and admire beautiful things. You will not regnet this I promise!
Several nice restaurants for a meal and a drink you will find just around.
It's a very nice place to visit when you're in Moscow. They have a lot of stuff belonging to Tolstoi and his family and it's very nice to see how and where he lived and worked. It's definitely worth a visit.