Cozy, quiet, all you need spaces. Don’t forget the terrace to take a deep breath.
Just keep in mind there are two staircases, one general for the whole house and another 'narrow' one with direct acess to the bedroom .
Lots of services possible (eg laundry service).
Buses and supermarket in front of the door.
Place du Luxembourg, more chic bars and restaurants yuppie area at 5 min walking distance two blocks right hand side.