I tried this recipe, my family and friends tried it and we all came to the same conclusion, too sweet. I also had trouble getting the cake to absorb the milks eventhough I let it sit overnight in the baking pan with the milks. I think the cake was too dense and that is why it did not absorb all the milk, only the edges did and the center of the cake was dry. The flavor of the cake without the milk is very good, but I think the combination of the sweet cake and the very sweet milk, makes the overall taste too too sweet. So to all of you "very sweet tooth" people, this is the cake for you!!
I have made this type of cake, Tres leches for many years and yes, it is sweet. However, you need to poke hole in the cake and be sure the entire cake is covered with the 3 different milks. Once set overnight, you can certainly remove from the pan and decorate if desired with buttercream frosting and ther you got it. You definitely have to have a sweet tooth.