kuib sinia bucharest kidsKuib restaurant in Sinaia (close to Peles Castle) offers very good food and is kid friendly.  They have an interesting menu for the kids, two playgrounds (an outside one which is great and an indoor one not so well maintained) and the staff are very friendly with kids.  You can eat in the indoor or outdoor area and on the same site is a hotel and villa offering accommodation.
Website (accommodation):  www.piatrasoimului.ro
Distance from Bucharest: appr. 2,5 h by car
Address: Str. GARBOVEI Nr. 10C, Sinaia, Prahova
Phone Reception Soimului: +40 244 310 302 / +40 732 127 737
Telephone Restaurant KUIB: +40 0735 189 107