Venus Mahadasha is for 20 years, therefore it is not possible to write in two lines how your 20 years of Venus mahadasha would be. A lot will depend upon the transit will be in the next 20 years. But generally speaking Venus in the 4th house with Rahu, the native will live in a good house, even if he does not own it. He will spend openly. Relationship problems can also be there.
Blessings,
Navneet Khanna
Astrologer