The apartment was great! It was situated in a great location, just next to Takadanobaba station which has access to the Yamanote line (JR green) and the Tozai line (metro blue). This meant that we could reach Shinjuku, Harajuku, Shibuya and Ikebukuro quickly and easily with Yamanote. Instead of travelling in a circle, we could also reach Tokyo Station using Tozai. Stop at Otemachi and you are only a few meters away. The elevators to the stations are all easily accessible.
There are 2 supermarkets (Seiyu and Ozeki) nearby which meant cheap groceries like drinks, snacks and fresh produce if you fancy cooking. The apartment is also surrounded by numerous convenience stores that gives you supper options. That is on top of all the 24 hr food joints like Fuji Soba. There is also a Don Quijote (24hr), a McDonalds and a Loft for all your needs. If you are driving, there is a paid parking facility just next to the apartment. Take note that parking is super expensive in Tokyo in general. The next best option is a Nippon rental company nearby so if you ever need to drive out of Tokyo, it is a good option to have. Then there is my favourite pharmacy, Tsuhuru Drug, which has one of the best prices for most of Japan's medicine/health products.
There is a restaurant selling a particular variant of udon which originated from Fukuoka called Daichi no Udon. The soup is mindblowing and the service is great even though they do not have an English menu. Nothing that Google Maps or Translate couldn't solve.
Last but not least, the apartment is less than 200m away from arguably 2 of the best tonkatsu restaurants. We tried one of them (Narikura) and totally loved it. The other one, Tonta, is a bit of a walk but I am sure it is worth the journey. I would totally recommend this apartment and I would totally bring my family here for my next trip.