Dropped by Melly's to sample the alfajores. They were absolutely out of this world. They came in about 5 flavours and I had the chocolate and the white chocolate/walnut. Both delicious. We also bought some cookies at the same time. I tried the chocolate and speculaas cookie which was ok, but nothing spectacular, especially for the price. The alfajores though were definitely to be recommended.
The cafe itself is tiny, but a lovely atmosphere with very friendly staff.