The apartment is a good size compared to what is out there, there were five of us (one of them a baby) and then six for a short time and we were tight but comfortable.
The building is convenient, the staff downstairs were very courteous and the people in the building very friendly. It has a play area for kids, a pool, a gym and a set of parrillas that would be great in summer or spring.
The location is great, just a few blocks to Santa Fe where you have access to all sorts of transit and of course Plaza Italia.
We were apprehensive about the laundry because Cameron said that's what people usually complain about (it's a coin system and it's hard to find coins) but the laundry suggests a few places that are walking distance that sell the coins you need to work the laundry. Either way there is a great Spanish lady literally across the street that can do your laundry for 100 pesos a load I think or else self serve which was hard to find in other parts of the city.
The issue with the apartment was the cleaning, but as I mentioned Cameron was very attentive in his replies and solved every issue for us within a couple of hours. He's said he is in the process of finding better service.
You have the essentials in the kitchen although they need some upgrading, plates are chipped, etc.
Overall, I'd recommend the apartment if you don't mind cleaning yourself a little bit (although maybe then the cleaning fee shouldn't apply..)
Bring Lysol wipes, some paper towels and definitely more toilet paper and you should be ok.
Suggestions to making it an awesome experience: list of nearby restaurants or attractions , leave a Sube (transit pass, it's just 25 pesos but it would be a nice touch to feel welcomed to the dirty) with instructions on where to add funds to it... just a thought, probably because I've worked in the hospitality industry!