Manuel was very friendly and easy to get in contact with. Although I did not initially meet him (because of flight issues), he made my friend feel very welcome and showed him around the place. We had a bit of an issue opening the door to the apartment but Manuel was available to contact throughout our visit and we got it sorted.
His place was great and really convenient for our stay during the week. Great location and really not far from anywhere. Also the balcony is an added bonus too. Great for good weather (which we unfortunately didn't experience enough of during our stay).
There were 3 of us in total for the stay and we all felt comfortable in Manuel's apartment. I had the double sofa bed, which was huge and very comfortable.
Fridge full of beer and a piggy back to make contributions towards it is definitely a winning concept.
The apartment is only 4/5 stops on the U4 line from the City Airport Train (CAT) stop, which made it even easier to find and a 5 min walk from the nearest U4 stations. There are also a good number of supermarkets near by to stock up the fridge too.
I'd highly recommend a stay at Manuel's place if you're visiting Vienna.