Wrote this up in the Forums and thought I'd add it here. I booked this without having any tripadvisor reviews so I thought it'd be worthwhile to share my experience for future potential travellers.
Away we go...
I have been at the Didot Alesia Citadines for over two weeks on business. In general I have a favorable opinion of the property. It's located within 10 minute walk of the metro (13 or 4) or a couple minutes from a couple buses (58 and PC1). When the Tramway gets going later this summer it will also be very close to that (which connects to Port d'Orleans and RER B line along the same route as the PC1 bus). I would say nothing is more than 30 minutes away max and southern Paris areas like Mont Parnasse are maybe 15 minutes away on foot.
Location is ok for those with extended business or vacation plans. It is not central by any means though the 13 will take you straight through Invalides, the Champs (right by the d'Orsay, close to the Louvre), St. Lazare (Opera, shopping) and fairly close to Sacre Coeur in ~20 minutes without changing trains. If you've been to Paris before and don't forsee yourself taking the midnight strolls along the Seine most first timers are dreaming to do this property is not a bad option. It's comfortable for those people or families who know the city and can take the little bit of extra time getting places in exchange for the convenience to a nicely equipped kitchen and more apartmenty feel.
Staff is efficient and for the most part amiable. Laundry is ridiculous at 13 Euro for a wash and dry (but there are a couple of reasonable laundrettes within 5 minute walk). Room was clean and fairly modern with a Dishwasher, mini-Fridge/Freezer, Microwave and two burner stove. My room smelled very off when I arrived. I traced it to a stove hood filter that didn't look like it had been changed in years. Once I tossed that the odor was gone in a couple days. The A/C blew cool and the water was hot (you have your own hot water heater in your apartment). There was a serviceable sofabed, big desk, TV, CD Stereo, ironing board and iron as well as a safe and a fold out clothes rack in the shower. All in all, the conveniences made for a comortable extended stay. Internet was a bit disappointing. The lobby has a free WIFI access point but I could not get the signal in the room. When I was in the lobby the connection was slow and unreliable. There is a public PC there for communal use along with a plasma for the news or big sporting events (World Cup, Le Tour de France, etc...). I didn't take breakfast but it is available for a charge (really, why would you want to pay 8-10 Euros when you could get something at the Supermarket or Boulangerie across the street for much less?).
The neighborhood is nothing special but pretty convenient. There is a Supermarket right outside the front door (though prices seemed a little higher here than at other neighborhood locations). There is also an Ed, ATAC and one other market near the Plaisance metro station (~5-10 minute walk). Per nearly every Parisian neighborhood, there are plenty of chinese, indian, japanese, french, pizza and donner kabob take aways to satiate you. There are also a number of more fancy restaurants and bars in the area but nothing too touristy. Usual accomodations of banks, atm's, pharmacys, post office and coiffure all close by as well. I did not feel unsafe in this neighborhood and it is really dead on weekends.
Anyways, that's about it...I paid b/w 82-116 Euros (due to the Bastille Holiday week). I'd stay here again for this price.