We stayed in Split for one week and loved the apartment which is situated only a short walk from the old centre, the Palace of Diocletian. It was easy to get everywhere; e.g. the central bus station was just some steps away down the street.
The apartment itself is really vast, with great rooms and high ceilings. The charm of a 100 years old Art Nouveau building, reflected by the historic windows, doors and furniture, is combinated with all comfort we could emagine (e.g. air condition, a modern, fully equipped kitchen...).
We stayed in the apartment with six people. There are two seperate rooms for two or three persons each (providing some privacy), and a sleeping couch in the central living room. Enough space for everybody.
We would certainly stay in this apartment next time in Split again, and would recommend it, especially if you like it classy:-)