Look no further, this is the flat you're looking for.
I really cannot say enough about our stay at Strahinja's flat. I was there recently with my mom, and she has been raving about it continuously since we left.. seriously, she won't shut up about it. Where to start. We checked in quite late on a super rainy night, but Strahinja & colleagues met us at the door to carry our luggage up the stairs since their elevator was temporarily not working. The building was accessed with a combination lock box - so its easily accessible at any time. The flat is about a block off of a main road, where the trollies run into town (the #2 goes to Bellevue = center of town, in about 10 mins), so it is well situated but also quiet (and we were there on a friday night). In the morning, we could hear the church bells ringing - my mom's #1 favorite thing about the flat.
The flat itself was great, there is really a lot more included than I expected. I have stayed at ~50 AirBnB's in Europe & North America, and this one really surpassed expectations. The flat has one of those pod style coffee makers, beer in the fridge, and snacks on the table. Strahinja even brought me a bottle of wine (since I don't drink beer)... really going above and beyond. The bathroom also has everything you need - lots of various toiletries, if you've forgotten something.
The flat is comprised of a kitchen / dining area, which opens out into the living room. The one bedroom is off of the living room. The living room also has a day bed kind of sofa, which was suprisingly comfortable - for one. It might be cramped for 2 people. The bed in the bedroom was also extremely comfortable (my mom's #2 favorite aspect about the flat). The flat was very clean. The water pressure (and temperature) in the shower was amazing (my mom's #3 favorite aspect). Because the flat has windows on both sides of the building, there was a great breeze blowing through once we'd opened up the windows. Plus there are a few large fans in the flat. Overall, quite excellent.