Positive sides: The flat is exactly like on a pictures, very bright, a lot of space, many interesting things and games, especially for children. Good area, central, many metro lines near by, noisy and a bit messy outside, but inside of the house silent and calm. Very nice and helpful concierge.
Inconveniences: 3d floor but quite high without elevator.
No separate bathroom, shower is in the adults bedroom.
No free wardrobe or locker or another place to put your stuff out.
Cleanness: things were in order, but the flat was not clean for the guests - the floor was not washed that the slippers got black after first day. in the kitchen in some places just huge layers of dust, the vessels was muddy. It was inconsiderable for us so we had to ask concierge to wash the kitchen for us for extra pay even though the cleaning fee 70 euro was included in the price.
Communication: fast answer, flexible time of arrival. Lionel was very nice and helpful in the beginning, however his wife at the departure was talking in totally inappropriate tone, almost screaming and blaming us for not cleaning the flat after departure even though, as I said, we already have payed cleaning fee 70 euro and 50 euro over it for cleaning.