This is an absolute gem. Stylishly furnished but our one year old found nothing she could reach that she shouldn’t. Three large high-ceilinged double bedrooms with glazing that kept street noise down. You can hear a church bell chime every quarter of an hour but it never woke us up! A well equipped kitchen, one en-suite bathroom and a second bathroom were welcome.
Sarah also arranged transfers to and from the airport and a cot and stroller for us, and we were met in person and shown round.
As for location, you are within around 250m of the Old Town Square. In the opposite direction the metro station at Namesti Republiky is about the same distance and there’s a shopping centre there (Palladium) which houses a supermarket so you can get what you need within ten minutes. There is an elevator to the flat we had but you still have to descend a few stairs.
Sarah kept in touch to check we had all we needed and provided a helpful little guide to Prague that she and others have written.