Lyon, France Transportation

My husband and I will be staying in Vieux,Lyon (Hotel is on Rue de la Loge). We are trying to determine if should brave the transportation system there or just grab a taxi at the airpot to the hotel. It sounds like the Rhone Metro at the airport to Part-Dieu is fairly straightforward. After that we're a little concerned. Our hotel told us to take the metro (from Part-Dieu) to the Vieux-Lyon Cathedrale St. Jean station and then walk from there. But it looks like it may take a few train changes. Is the metro there easy to navigate?
(we have very limited French language skills) Thanks so much!

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