The apartment is quite nice, might be a bit too cosy for 4/5 people if you don't know them very well as it's not that large.
The walls are extremely thin between one room and another so it got a bit uncomfortable at times - especially since the bathroom is next door to 1 of the bedrooms. The sink and toilet are also in separate rooms which wasn't too bothersome but probably a good thing to know.
Other than that, the apartment was in a very convenient place close to the centre around 15/20 mins by walk and was located in a nice area surrounded by many nice breakfast places. The kitchen was also very well-stocked even with a coffee machine and such. The sofa-bed is located in the living room which means the 5th person also has some privacy since they'll have their own room if you're 4-5 people.
Trudi was also very easy to communicate with through Whatsapp and sent all necessary information through email.
Thank you Trudi! :)