Chatou is a bit out of the way, out on the edge of Paris but it's easily reached by the RER and the experience is well worth the trip. When you get off the train you're in the middle of a city but, once you cross the bridge, the clock is turned back. If it weren'r for the apartment blocks across the river you might expect Renoit to show up. The balcony where "The Boating Party" was set is perfect, right down to the striped awning. The building was abandoned for a long time but was restored by the city of Chatou and the French government and it's perfect. The island is a park and the walk along the river is wonderfully bucolic.
With all that scenic history one might think the food would be mediocre. One would be wrong. The atmosphere is delightful. The food is good. The service is friendly and efficient. By all means, go! Sip a coupe de champagne as an aperitif, have a nice meal and just sit back and absorb the ambiance. No wonder Renoir and his friends loved it. There is even, sometimes, a sailboat like the ones Renoir painted anchored off the restaurant. The only thing I can't figure out is where they sailed it. The river is very narrow and, as a sailor myself, I wouldn't want to spend hours tacking up and down.