The flat is well- equipped and located in a very good neighborhood. The lake is nearby and it is very easy to enter the city by bus. Personally, the price is matched the value. Helena is very friendly and helpful. It was a pleasant time staying at her flat.
Just for a side note that you/travelers must have a capability to walk to get to transportation e.g. bus/sbahn/ubahn. The nearest distance would be a bus stop which will have you walk for a bit.
The rest is simply good and comfortably homey flat to stay!