Juliana's place is perfect if you want to be close enough to explore the city but don't want to be in the hustle and bustle of Rio. The apartment is just in front of a quiet beach that's ideal for surfing (with kids). There's some strong currents on some days and the wind picks up in the afternoon so we recommend going in the morning when it still isn't too hot.
At 5 min walking distance there is a street full of wonderful restaurants and some supermarkets and it is a very safe area. There's a great skatepark and -bowl at 2 km. from the apartment. One of the best trails (Pedra da Gávea) is only a 5 min. drive and so is the start of the city (Sao Conrado).
Juliana provides you with plenty of tips on restaurants and shopping. She left us some lovely snacks and refreshments upon arrival.
The apartment has a cleaning service and even offers you some beach chairs and an umbrella (which you will need as the sun gets very hot)!
We also recommend to rent a car to visit the beaches further West. To go to the city Über works fine.
We loved every minute of our stay at Juliana's place!