We enjoyed our stay here—it is very centrally located, and we had a great meal at Trattoria Anita around the corner. The apartment is well furnished. The living room sofa bed is a futon and was comfortable for our 12 and 9 year old kids. For runners—it is located close to the river so I enjoyed getting out in the mornings and running along the river to Cascine Park (about 1.5 miles away).
The Keesy point check in was dry convenient. There is a charge for luggage storage, however, so might be worth comparing costs with nearby SMN station.