It is a huge apartment with fully equipped kitchen, and a big comfortable bed. Also, it is very clean.
Me and my husband stayed there only for two nights, but I'm sure it can perfectly fit a long-stay as well.
Receptionists are very kind and helpful, - you can always find the details about public transport, or any other issue.
Location is very good, - near the metro station and close to a places for tourists visits.
I definitely recommend this place to any type of travelers to Prague.