I have now stayed at one of Mr Hisao's apartments twice. Both experiences were wonderful with great finishing touches (such as sandwiches in the morning on request!) and wonderful location (about 11 min walk to Uguisudani Station and 15 min walk to Nippori Station — both are on the Yamanote JR line so are very compatible for those using a JR Rail Pass or those wanting to reach many of Tokyo's best attractions quickly). Would always recommend!