I loved the combination of quietness inside/liveliness outside, the large amount of space, big bedroom closet, large bright windows. It should be even better in spring, when the weather should be fine for sitting on the deck (although you never know in Belgium!). The apartment is decorated discretely which made me feel at home.
Public transportation is easy and can take you to the museums (tram 93) to the Brussels Central train station (bus 38) to the Bois de la Cambre (tram 8). You can walk to the Place du Chatelain, place Flagey, cross the avenue Louise for a simple but tasty japanese meal at Kokuban, or enjoy the ducks and other birds and the Etangs d'Ixelles.
Alex responded fast when needed, such as when the building alarm started unexpectedly one evening. I went out to dinner but Alex went to the building to check things were OK.