Klara's place is ideally positioned in Prague to really get a good understanding of the city's history. Everything was walkable and easy to get around. Plus, being near to the train station made day trips outside of Prague very simple.
From the outside, you definitely have questions about how nice Klara's place is. Bit of an old building, dark hallways, etc. But, Klara's place has been lovingly restored and is a great layout. It would easily accomodate two sets of couples or a larger family then we had. It was wonderful!