This is a great property if you're looking for something just a little bigger than usual. With three bedrooms, a large living/dining room, you can relax quite comfortably with up to 4 guests... although more can fit.
The kitchen preparation area is a bit compact so if you plan to cook for more than 2 you'll be a bit tight. However, there are a lot of reasonable restaurants within 500m so you really don't need to cook.
I'll be looking to book this property the next time my family is going to be together in Tokyo.