Kemp Tíšava is a fantastic campsite with a beautiful beach and swimming area. Everything you need is right on the campsite. I highly recommend it.
Beautiful lake view and lovely beach for swimming. Excellent WiFi connection. Friendly owner. Parking with rooftop tent costs 5€, 4€ per person, and dogs stay for free. There's also a kiosk available. Showers are available for 1.50€. We are completely satisfied :)
There is no wifi or grey water dumping available at this location. It may be costly, but if you have the means, you can drive to Ždiar (Strednica) where you will find a large parking area with a wonderful view of the Tatras mountains. It is a quiet place at night and best of all, it's free.