I looked for reviews about this property and the Ecla Business and I could not get info to take an informed decision about staying there or not.
First, this is an student campus that also rents units to travellers. The apartments are nice and big for Paris standards with a kitchenette equipped for 2 persons.
The facilities of the Ecla Campus are amazing. The gym is really very good, and thats not common in Paris. There is a self laundry room and restaurant as well.
There is no room service or daily cleaning as you would expect on a hotel. This are apartments and they clean them every 4 days or so, not daily, so dont expect that.
For the price, I really think this is a very good option for staying in Paris for some days, more so if you work out and need a gym during your trip.
Will go back again next time in Paris.