Thank you Hossein for your comment.
May I add, concerning the staircase of the co-ownership, that , as my husband told you I think, that the complete refurbishing is planned - painting, walls and ceiling, panneling, carpet etc ; all the expenses have been assessed and the co-ownership' s account has already been credited by each co-ownership. It will soon be completely new, clean, attractive and elegant.
And, as for every staircase, young kids and old people take more time to go up than others ; it cannot be helped.
(and the absence of a lift is specified on the site).
As for parking, during the day, one can find all parking places needed, everywhere in the area..
In the evening, there are always places to park in one of the adjacent streets, and I am really sorry we forgot to tell you about that Hossein.
Have a nice installation and time in Le Vesinet, we wish you the best there.