Hi, we have a four bed converted barn in the Charente - see
www.lagrangedechille.com that might suit you. There are four large bedrooms there one is en-suite but the others all have a kind of bathroom complex (separate bath, shower and toilet) that means that people don't get in each other's way in the morning. The house is very secure (tall gates to fence off the swimming pool and gates to fence of the garden and patio from the outside world.
We only have one cot there but might be able to borrow more from friends in the area for the time you are there. There is also one high chair, but again we could try and borrow more for you.
We can provide some toys and there are plenty of DVDs to keep kids happy in the evening.
Call me if you want to discuss further, the number is on the web site.