Petra's place is just a cozy little gem in a chilled out area. I can't recommend it highly enough. From the quality of the fit out her spotless apartment to the unexpected extras laid on, my expectations were blown away. You probably have the same 4 questions I had:
Neighbourhood?
It's a quiet residential street. The buildings have character and there are nice bars and restaurants dotted around.

Distance to the centre?
This was probably my biggest concern before I arrived. It needn't have been. The metro and tram system is cheap and very easy to use. You really are just a couple of stops from the centre. I like to walk and more than once took the 25 minute stroll into the old town.

Warm?
I was there in December. The apartment was very cozy and warm.

Broadband?
Excellent.

Finally, my host Petra was fantastic. Her text and email communications regarding meeting to collect the keys were excellent. Due to unforseen circumstances on my arrival day, I had to change these arrangements several times. This must have been inconvenient but there wasn't even a hint of a grumble; just concern for my safe arrival. Thereafter she left me in complete peace to enjoy my stay.