Positive things: position (1 min from metro stations, 1 min from Tranoi show, full of bars and restaurants around, pharmacie and boulangerie is in front...), quietness (windows open on the inner courtyard), and also the concierge gives you a super nice welcome.
Negative things: all that comes from being a 5th floor apartment in an old building without elevator, with small spaces, small shower, small bed... well not a proper bed, a folding one, but it works anyway.
Overall I had a nice stay, if you’re alone and need a space in the center of Paris this will be ok!