Pros: 5 star location! Tons of cafes, bakeries and restaurants nearby frequented by locals. Huge Monoprix and other grocery options few steps away and train station mall for shopping, near lots of metro lines for quick transport to anywhere in Paris. We had a room for four and it was huge for Paris with bedroom upstairs and living / sofabed downstairs. “Almost cute” interior courtyard with patio furniture. On famous Montparnasse Breton crepes street (literally 10 crepe restaurants within one block!) Affordable price.
Cons: A/C was broken, hair dryer seemed to be a repurposed vacuum cleaner, old furniture, inside finishing was rough, tacky fake plants used as outdoor decor. We opted for more appealing and cheaper options outside instead of the offered 13 Eur breakfast. Bathroom facilities were serviceable, but not really modern. Odd configuration with bathtub and sinks upstairs but toilet downstairs. A second sink was hidden behind a sliding door on the main level, I could see how some people would run away from this place in horror, but I’m not fussy about appearances and appreciated its amazing location.