We very much enjoyed our Paris stay @ Guillaume Et Penelope's place. It was very centrally located for lots of Paris's sightseeing and is very close by to Bus and Metro stops to keep you moving around. Great for seeing the city's beautiful sights. It's also got a good selection of sights within walking distance!
It's centrally located for shopping, and was for us, a foodie paradise. Penelope was extremely helpful in pointing us towards local farmers markets and good local shops - La Fermerie was a standout winner.
The flat is comfortable, well decorated and well equipped. It's in a safe area and even when coming back from a long days journey around the country we always felt safe, even late at night.
With regards to noise, it is an inner city flat, there are bars and restaurants right next door, which is a great bonus, and you cannot expect a typical Parisian city apartment to be a quiet, tranquil or pastoral environment. I can see that during summer, with the windows open, it might be considered noisy by those not used to city hustle and bustle.
We have friends who are planning to visit Paris later this year and we will definitely be recommending Guillaume and Penelope's flat to them. Thanks very much!!