My friend and I visited Paris for the first time this week, we had initially been warned about the area, but both agreed that there was no point where we felt unsafe or not at ease. We walked around the area at all hours of the evening and had no concerns. The staff were LOVELY, friendly and funny and helpful.
We didn't have breakfast but saw it as we grabbed water each morning, and it looked lovely, but we couldn't comment on if there where gluten free or vegan options. The Twin Room was small, but very clean, the shower was tiny, but has amazing pressure and the temperature was just perfect!
The general area was quiet, but busy enough to give a great atmosphere and make you feel safe enough to travel around.
We were offered airport transport both to and from the hotel, but opted against it due to different arrivals and departures, no bother though. We walked to the hotel and got to see many sights on a heavily detoured route from Montparnasse.
The shops nearby as relatively basic, but there were a number or restaurants and wine bars close by which were great.