The Gate 1 Terraces has showers too, even if there is no MB Spa (and no steam showers as far as I can tell). While I have not gotten steam showers at the Gate 1 Terraces, there are decent en-suite showers/bathrooms at the Gate 1 Terraces too; and all the same toiletries are given as one receives for the other showers (in the MB Spa area at the Gate 10 lounge bank).