If you can do it, just do it. We stayed in Manoir des Ullis for 10 days. I wish it would have been 20. It was simply too difficult to leave. It’s a quite special place, very well furnished for such a big manoir. Thought the rooms might seem a bit old, at the beginning, the truth is that a lot of details make the place quite comfortable. Lights in every bed! Special furniture. And the outside is simply delicious. Pictures hardly show the magnificency of the compound. The garden is huge and full of special corners to stay in silence and relax. We had very good weather, and this may be different if you find lots of rain or in winter. But I wouldn’t mind to retire for a few days and stay there also in winter. The children (mostly teenagers) loved it.