One of the best hotels that we've stopped in, good quality but also friendly and welcoming. The hotel felt very secure and safe, in a good location.
We were happy to walk into the centre of Vienna or to Karlsplatz underground station, which has excellent connections to other parts of the city including Schonbrunn and Prater Park with the famous Ferris Wheel. For anyone who is not happy to walk far, there is also a tram service very nearby.
The breakfast was excellent, with a good selection of cereals, cooked food, bread, fruit, yogurt etc.
The room was an adequate size, with a safe, air conditioning and a very good bathroom and everything else we needed.
We had two evening meals in the restaurant, which was very good though with relatively few options. There are also a variety of other restaurants nearby.
The hotel staff were very polite, friendly and helpful, providing advice and a tourist map on request.
If we visit Vienna again we would hope to book Hotel Erzherzog Rainer again, as our first choice.