The rooms are tiny, but have clean, private facilities. The hotel is in a great location - a bakery is 2 minutes walk away, as are restaurants, fruit and vegetable shops, brasseries, etc. The Eiffel Tower is a 10 minute walk away, as is the nearest Metro station. It is a good price for Paris, so if you are spending most of your time out exploring, then the size of the room won't be an issue.
There is an elevator, which is great, and they do offer a reasonably priced breakfast.