Mika's place is really nice and well located - I have no difficulties to get there from Vienna airport, thanks to great and clear instruction. There is U3 train around 7 min by foot from the flat and multiple markets around (Hofer, Billa). The place itself is small, well organized and equipped - perfect for visiting the city. Contact with Mika is very good - I didn't have a chance to meet her in person, but she's very responsive and in case of any trouble there is always the neighbor David, who will take care of you. All in all the stay in Mika's place was great for what I'm really grateful!