Our apartment is a one bedroom with lots of charm, typical of very old pre-Haussmanian Parisian buildings.
It can sleep two adults, a baby, and we have an extra mattress that you can put in the living room if needed.
The kitchen is fully equipped, though there are so many restaurants around you might not feel the need to use it.
There's a washer and a dryer. And a nice piano keyboard. A TV, VCR, DVD player, but then again, I doubt you'll have the time to enjoy these. Oh, and we have WIFI, for those like me who take their work abroad...
Our apartment is located in the very heart of the city, in a lively street.
Cafés, restaurants, shops, museums, cinemas, jazz clubs, all walking distance. Grocery shopping is easy too.
It is a safe and easy neighborhood.
And transportation is a cinch: M° Chatelet, 2 mn away. Also, RER trains (regional transportation) converge in Les Halles (5 mn walk) which means you can take direct trains from/to the airports (quite convenient at rush hour, on top of being much cheaper).