Dan's apartment is nice, clean and well located - near the centre and almost next to the Metro station. It is small and fits 2 people well, while 3 people have to squeeze a bit (I was travelling with my mom and sister, so that wasn't really an issue). I guess it is just fine for a short stay in Paris.
I really appreciated it being so clean and the sheets fresh, since unfortunately I've learnt that this is not to be taken for granted when travelling to Paris. ;)
We never actually met Dan, but she was very responsive and nice and the check-in and check-out went smoothly. Even though it is located above a some kind of a bar, it is quiet and calm in the night.
I would recommend this apartment to everyone travelling as a couple/family or close friends who need a calm and nice place to stay the night, but don't plan to stay at home much.