My family and I were hosted by Ingela for a week end in Vienna and I have to say that the apartment was very cozy and well organized! It is perfect for 5-6 people, clean and quiet, Ingela is very clear and helpful, if you need anything just ask and in no time she' ll get back to you and tries her best to resolve whatever problem you have.
Wien is a delightful city, full of many sights to visit but thanks to its position you can get everywhere with the u bahn (underground).