Felix and Iker were very hospitable hosts, helping with tips on Christmas markets, bars, cafes and restaurants nearby (we especially liked the Israeli breakfast at Neni, the traditional Austrian fare at Cafe Eiles and the chilled Phil cafe!). They let us leave our suitcases in their apartment building on the last day of our stay, which saved us from having to lug them around the city. The apartment is spacious, nicely decorated and was kept warm - very welcome when it was sub-zero every day of our stay. Great location too - a few minutes from Rathausplatz and the Museum Quarter.