We stayed in august with our two little kids, the landlord is very kind and the apartment are perfectly clean. The swimming pool is very nice. They speak a very good italian.
We have stayed at Brela-relax in July 2012. The house looked new, the room impeccably clean, with trendy new furniture and very nice bathroom. Fantastic view onto the sea and islands Brac and Hvar from the balcony. Only 3 minutes walking down by stairs to a beautiful small pebbly beach. Small grocery shop just down on the corner and Brela center only away about 5-7 minutes walking. The hosts are very nice and helpful.
A little tricky access to the house by car via a small gravel road your GPS will probably not recognize, which turns back from the main road first Baska Voda exit, but this might have changed since then.
Overall, we have had a fantastic summer holiday week there, can only recommend to everyone.