Small but fine for a weekend :-)
However you should not be taller than 1.75m to sleep in the bed. However, the view from the window excuses the small bed. Nice quarter to stay in Paris with plenty of restaurants and bars. Makes it noisy in the night though.
A lot of Public transport stations nearby! 10-15 min walking to Sacre Coeur!
I’d recommend for breakfast to visit one of the boulangeries, get a coffee (café allongé = black coffee btw :D)
and a pain au chocolates/ aux amandes and sit down on a public bench in the sun. The best way to start your sightseeing day in Paris