We have spent a week in Gustav place. First of all as i have booked in advance for 2 ppl place (like 2 month) but then plans a bit changed and i had to add one more person, and that was pretty easy. And thats for sure big enough apartments for 3 ppl.
The best of this place is definitely a LOCATION. Walking distance (passing all possible shops) to the historic center and just in the corner of West Train station. We went to Salzburg by train from there and took direct bus from/to airport, very convenient.
Apartment has everything for cooking, for bath, even for kids.
Just internet was a bit slow. But is only important for me, as i am working daily from my laptop. But if you there for vacations, it is ok.
Very warm place, hot water. Happy with everything! Highly recommend👍🏻