what's a wide house? what's a huge house?
After purchasing the Telescope bauble, you can play an extra card. If you mouse over the "Hands" tab on the left of the screen, you can see what new hands are available as a result. Mousing over them will explain how to play them, but to answer your question here;
Both wide houses and huge houses need two Telescope baubles to play, so that you can play seven cards total. Wide houses are a four of a kind plus a three of a kind, and huge houses are a five of a kind plus a pair.