Sylvester's place is excellent both for shorter and longer stays. It's bright and spacious, and looks even better than in the pictures. It's well-equipped, all the amenities are great (dishwasher! Playstation :D ), the bed is comfortable etc.
Sylvester himself is very easy to communicate with and extremely helpful and cool.
The location is very good with lots of grocery shops and restaurants nearby, as well as easy access to public transportation.
In sum, highly recommended!