We felt very comfortable in Haus Sophia and we didn't miss anything. The facility was modern - everything was clean and tidy! There is enough space for 4 people and you can make yourself comfortable on the terrace, which is almost invisible (sunny side). The location is also very good, you can get everywhere quite quickly Wutachschlucht, Röthenbachschlucht, Schluchsee, Titisee, Donaueschingen and Freiburg (Schauinsland) is just under an hour but also a great day trip!