Dear Pratheek,
8th house is not the house of death, but it is the house of longevity. Generally speaking, it is not considered an auspicious house as it is not associated with any materialistic gains. Therefore any planet which goes in the 8th house losses its materialistic significance. Venus in the 8th house is not good. Venus is the karka for marriage and woman, so in a male chart, it indicates problems in a relationship. Venus is also associated with finance and materialistic things and comforts, in the 8th house it can indicate loss of income, finance and worldly comforts.
Blessings,
Navneet Khanna
Astrologer