We stayed at La Bergerie as a party of 4 adults and two babies in early September.
The owner (Catherine) went out of her way to ensure we had everything we needed for the babies - travel cost, high chair, baby seat etc which was great and meant we could pack less stuff.
We got the overnight ferry from St. Malo and drove down. It took us Mayne 4-5 hours, although it was our first proper time in France and with babies we were stopping every 5 minutes so I'm sure we could do it a fair bit quicker.
The house itself was really nicely done out, very peaceful and had pretty much anything you could possibly need to just turn up and enjoy a self catering holiday.
We found a few good things to visit locally (we drove to them but could have walked to some of them had we not had kids and a pregnant traveller!). I don't think there is really much of a town or village within a sensible walking distance (hence it's very peaceful!) Although we regularly drove down to the very beautiful Saint Savinien - a small town with some very old parts to it - which was only 5 minutes (literally) in the car. There we found bakeries, banks, supermarkets, bars, restaurants etc - basically everything needed.
We visited the Chateau De Crazannes (about 5 mins away) which was beautiful and had lots of history.
There's a little sculpture trail around the nearby old quarry which our toddler loved.
The port town of La Rochelle was Maybe 40 mins by car and worth a visit.
The highlight for us was visiting Il de Rey - which was maybe an hour away. Its an island accessible only via a really long man made bridge (with a toll fee of about £7 return) and is well worth a whole day to explore - beaches, shops, harbour, vineyards, lots of cycling etc.
Saintes is a decent size town about 15/20 mins away by car and was another great place to visit - it had a fabulous market on the day we visited, with some amazing produce. There's an impressive cathedral, lots of shopping and eating, boat trips on the river etc. We also visited the remains of a Roman amphitheatre there, which was really worth a visit.
In terms of food shopping, we visited the 'Super U' supermarket at St. Savinien which had everything needed.
2 of our party managed to wangle an evening meal out and Catherine very kindly offered to pick us up at 10pm which was very helpful.
We stayed at La Bergerie for 10 nights and would recommend it highly.
The only very slight down side was that there wasn't any town nearby which was sensible walking distance, although with young children, this was not a major issue for us. But for a relaxing getaway, it was brilliant.