The apartment is very spacious and the view is just incredible. maybe not the fanciest decorated and newest of kitchen faucets, the place was perfect for our stay and very kid friendly as enough space to spread out the toys. we travelled with 2 toddlers and a baby and it easy.
the building has a lift however the lift stops inbetween floors so there are always steps to do, but only about 8...so if you are travelling with kids, somehting to think about regarding buggies. but once in apartment you really have plenty of space.
the area is one of my favorites in Paris. Belleville park literally a minute walk. its a very multicultural area and plenty of shops and boulangeries to chose from. there is a direct bus to the centre (les halles/marie de paris/marais) and metro also just a 5 min walk.
did I already say the view is amazing :)
ENJOY!