I had a good stay at the Sadigo Court. It was a little hard to find due to the current construction blocking off part of the street, but other than that, it's in a pretty favorable location near the beach (about 2-3 blocks). I usually stay closer to the main portion of the South Beach strip (between 6th--15th), so it was a little bit further of a walk this time.
It's a slightly outdated apartment building-turned-hotel, but what I liked best is the amount of space our one bedroom had. It was perfect for accommodating a group of friends on spring break. The stoves do not work, but the kitchen added even more space and a full-sized fridge + microwave with a few dishes. There's a cute courtyard perfect for a little relaxation or a quiet breakfast.
Dina, the manager, and the rest of the staff were very friendly. If checking in late at night, make sure to tell them so, as they tend to leave the front desk between 9-10PM. The only major downside I had about staying here was seeing a huge roach and a few other small bugs in our room. However, I feel like we got a good bang for our buck on a college-student budget in the expensive South Beach! I would return.