I strongly recommend Misuko's place. It is nearby Shinjuku st.(Only 2 stops, 130 yen). Taxi fee was only 1,500~1,600 yen after the midnight. There are convenience store, self-laundry store within 1min from the house and the bar 'MEM' right in front of the house was so good.(we have been there every night when we were back to the house. reasonable price, nice bartender) The ppl we met around Mitsuko's place were so nice and the area is very cozy & quiet even though only 2 stops from Shinjuku st. We want to re-visit this place when we visit Tokyo again.