Location: walking distance to the main train station, though not recommended with lugage. The hotel is nearby a local mosque, so expect to be woken up at 4:30 for morning prayer, with pretty high volume.
Hotel premises: would classify this more as 3-star as the hotel has a feeling of being pretty tired and in need of an overhaul. Restaurant is pretty good though, with decent breakfast.
Room: could have been cleaner, actually rather basic for a 4-star hotel; main problem is the noise though, as corridors echo all types of noise and insulation of the rooms is not adequate. WiFi was extremely slow in the room, but OK in the lobby.
Overall: if you want the real 4-star level, as a European traveller you probably want to go to the Melia Purosani. If you want to save a lodging cost and you don't mind the noise, then the Santika should do fine.
Overall conclusion: not top-notch and with room for improvement in this category