The gate faces the mountain and the right side is surrounded by water. Is this house feng shui good?

You can't generalize, you should use a compass to see the direction of sitting, combined with fortune. For example, we look at Luan Tou now, with mountains in front and what is behind the house. If the sitting direction is arranged according to the nine planets, that's a good thing. If it is a two-star direction, and there are only mountains and no water at home, it is a failure. This should be combined with the specific Luan head. Generally speaking, it is not a good thing to have a mountain in front of your house.