The apartment is clean, spacious and modern and was better than I was expecting from the photos. The beds are big and comfortable and all of the appliances, furniture and finishes are high quality.
The apartment has two bathrooms, so would be absolutely perfect for two couples or a family with older children. We stayed with our two small children (2year old and seven month old) and I felt nervous the whole time that they would break or ruin something because everything is neat and new!!!
The location is fantastic- within walking distance to a big supermarket, the metro, the river, tourist sights and more.
It is up a few flights of stairs, but don't let that put you off unless you are really, really unfit. Climbing stairs is part of the Parisian experience!
I would highly recommend staying at Robert's apartment, but probably not with toddlers. We will return when the kids are older!