You must be somewhere in the vicinity of Recife - lovely town.
For the indoor, moderate-light plants, east is probably the best direction, and if you're concerned about midday direct sunlight, you might consider keeping the plants back from the window a bit, or behind a sheer curtain.
Have you considered vandas? They love heat and sunlight, andnif you're able to water them a lot, they'll grow like weeds for you.