Nick and Jenny's apartment is lovely. It is a super chic and minimal style with great facilities; Netflix, sound system, massive Jacuzzi bath, coffee machine and a really sunny little upstairs terrace.
The beds were really comfy and the apartment was always really cosy despite the minus temperatures outside!
There was only two of us staying but it would be fab for between 2-6 people either way! So much room and great value for money.
Only thing to note would be the stairs as there are a lot of them to climb to reach the penthouse and no lift.
Location was really good, we walked everywhere usually within about 30-40 minutes if we were going to the opposite side of the city . About 15 -20 minute walk to everywhere else. You can easily get trams or uber around prague too if you want to venture further afield and there are stops right by the apartment.
Found some really cool bars just around the corner from the apartment which had a relaxed hip vibe. Lots of beautiful sites and walks to be had and a handy little shop underneath the apartments for last minute necessities!