Akari was very helpful, both before our trip and during it, providing useful information about the apartment, the locality and how to find it. We arrived early, while the apartment was still being cleaned, but were able to leave our bags while we went back out for a meal.
The apartment is well situated, with plenty of local amenities in Azabu-juban itself, or a short walk away in Roppongi Hills. We found the 24-hour mini-market very useful for provisions, and a greater range of restaurants than could ever be sampled. The area is fairly quiet too, away from the hustle and bustle of places such as Shinjuku and Shibuya, but easily accessible due to the proximity of the tube, about five minutes walk away. We bought Pasmo cards and travelled daily to all other areas of Tokyo, as well as further afield places like Kamakura and Mt Takao, both of which only needed one change of train.
The apartment itself is comfortable, clean and ideal for a couple, or maybe a couple with one or two younger children. Our son, who lives in Japan, stayed with us for four nights and this too was OK, but may have been a bit cramped if it was for the full fortnight we were there (there is nowhere to store suitcases, although plenty of cupboards and hangers for clothes). The main bed is a low futon and not in a separate bed 'room', again fine for us, but possibly not if you have more limited mobility or are adults/couples sharing. The bathroom is a good size, with typical Japanese amenities, as well as a washing machine (useful instructions supplied). The powerful shower is lovely and shampoos/conditioners/shower gels thoughtfully provided along with towels. The kitchen is compact but functional and enables you to eat in. Not much storage space for food that isn't refrigerated, so just buy what you need for a day at a time. There is a hob, microwave and toaster, but no oven, so don't buy home cook pizza! The balcony and sliding doors into living area are lovely and we managed a few evenings sitting with them open. On colder evenings, the warming facility on the a/c was also useful.
Overall, the apartment is highly recommended and offers a cost effective alternative to hotel rooms, especially over a longer period when you need more space and a 'home from home'. We expect to book again the next time we travel to visit our son and for our first airbnb experience we are highly satisfied. Thank you Akari.