Staying at Sarah and Frank flat was a great experience. The flat is very clean, spacious and has any amenities you may need on a trip. The location is good, just a quick walk to Old Town. Sarah was very responsive prior to arriving with details. Frank met us upon arrival, showed us around, and gave us some tips for Prague.
The only notes I have are that the street can get kind of loud at night with the windows open and the beds/pillows aren't the most comfy, but will do. Recommend for a clean, spacious place in a good location!