We stayed at Sremski Karlovci (at Premier Prezident Hotel and Spa) for two nights as part of our trip to Serbia (2 couples).
The hotel is really nice.
It is located just few meters away from the central square, where you can find almost all of the bars and restaurants of Sremski Karlovci.
It is clean, with spacy rooms, and oversized beds.
The breakfast is very good and the personnel very helpful. They gave us many useful info for the sightseeings of the area and suggested us a very nice restaurant at the town.
The spa area was clean and not so crowdy. It starts from 8 o'clock in the morning till 10 o'clock at night.
It doesn't have a private parking area, but parking is not a problem in Sremski Karlovci.
So, everything was really nice and in a very reasonable price!