We really enjoyed staying at Virginie's, it's in a wonderful part of the 11ème full of great places to eat and buy groceries. The nearby park was lovely and offered a good place to relax between trips out to the rest of the city. We also loved being within walking distance of multiple Metro lines, it made getting around pretty easy.
Having access to a washer and dryer was great since it meant we could pack a bit lighter. The seven flights of stairs wasn't easy, but with all the food we were eating being forced to do a bit of extra exercise wasn't bad. Also, as someone who is over 6' tall, I'll just warn you that the bath/shower can be a bit of a challenge.