My husband and I had a few days away in Paris and stayed in David and Juliette's studio. It is located in the 14th district so outside of the touristy bits of Paris, but still very accessible. There is a bus, metro and tram stops close by that get you into the centre in about 10-20 minutes. However, we hired bikes (from right outside the studio) and cycled everywhere. It took 15 minutes to cycle to Le Jardin Luxembourg - which is absolutely beautiful.
To be honest you get the best of both worlds with this place - the studio is absolutely gorgeous and on a quiet residential road so you feel like you're getting real "authentic" Paris, but all the touristy bits are only a few stops away on the bus if you want them. David and Juliette gave us recommendations on local restaurants and they were all fantastic.