Apartment
Yuda's home is a one bedroom apartment on the 2nd floor (3rd floor if you're from the U.S.). The building has an elevator. It has a full size kitchen, bathroom and washer/dryer. The bed is queen size and very soft. Each room is equipped with heater so you'll feel very comfortable in the winter. The apartment is very clean.
Location
It cost me 30 euro (about 25 min) to reach the apartment from the Vienna Airport. The apartment sits in a quiet residential neighborhood. Within 3 min walking you'll reach the stations for subway, bus and tram. You can buy the ticket or passes from the vending machine in the subway station. It's very convenient to reach major tourism points, including Schonbrunn, Hofburg, Belvedere, etc. There is a bank office with ATM just beside the subway station. You can withdraw cash (Euro) using your debit card.
Communication
Yuda is very responsive and offered lots of great advice. We arrived around 23:00 on Easter Sunday. He stayed in the apartment to check us in and showed us around the apartment. We really appreciated that.