My 23-m2 apartment is located in central Tokyo on the Yamanote line. It is only 5-minute walk from the JR Ebisu station. You can walk to Ebisu Garden Place in about 10-12 minutes. Last train to Ebisu usually end around 12:45AM in the morning, but taxi from Shibuya or Roppongi to Ebisu is also quite cheap ($9-18).
There're many shops, restaurants, fun places to hang out around Ebisu. Some popular nearby restaurants include Afuri ramen, Dinh Tai Fong. You will enjoy your time in Tokyo! :)