Overall I had a good experience at Timhotel, staff were kind and the facilities were very good (good sized rooms, comfortable beds, good heating facilities, nice bathrooms, reasonable cupboard space and an in-room safe).
The hotel is within close walking distance of the Louvre and there are many good cafes and restaurants around the corner (including traditional boulangeries selling classical french food) and a good sized shopping mall nearby - Westfield Forum Des Halles.
Overall I had a good stay, the only slight negative as the cleanliness as some areas of the room were dusty (e.g. sliding panels for the bunkbeds) however hotel staff were friendly and receptive to feedback.