Akari's apartment is described accurately on Airbnb; it is clean and orderly, and proximate to the Azabujuban station of the Tokyo Metro. When I encountered a problem pressing the wrong button of the intercom (as I was responding to a visitor), Akari's husband helped iron out the trouble with security.
Akari recommended a park and some restaurants, and I found the (albeit tiny) pizzeria Savoy (about a three minute walk from her place) a delicious pitstop. Roppongi Hills, known for its slew of restaurants and shops, has sakura-lined streets that are pretty this time of year. Suntory Hall, which hosts wonderful concerts, is only two stops away.
Perhaps the only suggestion I can make is the addition of small notes in English. Though I speak conversational Japanese, I struggled with reading the kanji characters on intercom system; this explains the problem I encountered. Nevertheless, I highly recommend accommodations in Akari's apartment for two people.