This is an absolute must for anyone traveling with small children. Clean, tons of toys and a large grocery store 1 minute away from the apartment. Conveniently located between 2 subway stops makes it easy for you to go on day trips like downtown, Shibuya or other tourist attractions. You can also walk (~20min) to one of the biggest malls in Tokyo.
Overall, great place, extremely quick responses from the host and a lovely stay for anyone that wants to explore Tokyo.