I stayed for 10 nights during February.. Thomas was great helping me set up things prior to my stay... He let me know of a mobile provider (YESSS mobile) which worked out well.. I suggest one takes Uber or a cab (which I did on departure from Vienna)... Its far easier, as I did not know the subway stops very well.. (If you choose to use it.. take S7 to Praterstern, and then transfer 1 stop to Messe Prater.. and yes take the 1 stop to Messe Prater.. its very easy in Vienna as the subway runs about every 5 minutes :)

The unit has a nice view from the 4th floor, and is very convienient to Billa (a local market). A cab to the center of town is only about 7 or 8 Euros.. Very easy. Or U-Bahn will take you about 15 minutes max.. probably less.. Prater (the Park) was not open during my stay, but I think it is very nice when you are there. Vienna also has free bikes (you can download the app)... Another App that's great is called quando... it will help with the tram times (I had no idea of the routes)..

Kitchen is stocked with things you need... The only thing I think that would be useful would be a clothes dryer... but that's only important for longer stays.... And the towel dryer rods work well for anything but jeans.. and will dry shirts and anything else well.