A nice little studio in the Marais - very convenient for exploring Paris. The pictures are accurate - the studio is small, but cleverly designed to have everything you need in a small space. Good shower (comes from overhead rather than having to hold the nozzle like many places in Paris).
The bed is upstairs in the loft area. The mattress is effectively on the floor, and there is reduced headroom. It's perfectly fine for a few nights. However it does get very hot up there - even in late September. We had our baby son in a travel cot up in the loft with us and it became very hot for him. There are big windows you can open, but the street is pretty noisy with motorbikes and pedestrians going past all night. Would be lovely and warm in winter with the double glazed windows, but makes it quite hot in summer.