This is a wonderful guesthouse! Beautiful inside and out, each room is charming and cozy. The breakfast is delicious and hearty, the staff is friendly and accommodating. I left a few small items in my room and the staff mailed them back to me, their service is top-notch. It is close to the tourist sites (Prague Castle, St. Charles Bridge) without being suffocatingly busy. Couldn't have picked a better place to stay in Prague, I felt like I was in a fairy tale!
It's also close to public transportation (several very useful tram lines) that will get you to the more modern sites / nightclubs and bars. A quick uber/taxi from the central railway. Close walk to a lot of very good restaurants, and the staff provided excellent recommendations for nearby restaurants that weren't tourist traps. Safe to walk to and from, close to the embassies so there's police / guards out on the street even late at night. It was out-of-the-way enough to be quiet even with the windows open at night.
I was so happy to stay here, it was a delight!