Annas place is located as center of Mala Strana as you can get! House is old, but the apartment fully renovated. It hän everything you need for your stay (equiped kitchen, loundry machine etc.)
We were bit late, but Annas parents were nice and welcoming. There were even some beers waiting in the fridge:)
Probably not the best place for the se with bad feet (there's a lot of climbing in the area) but otherwise would definetly recommend this place!