Tereza's flat, if you consider it in isolation, is pretty good: nice interior, great balcony with a nice view, good internet connection. Kitchen and bathroom are both sufficiently equipped (except maybe for the stove hood). Tereza also listened to our concerns and offered the best help she can provide whenever needed.
There are, however, some things to note. The first is the smell. The common areas of the building are always smelling like heavy cigar and frying oil. Even a direct trip downstairs using the elevator is quite a bad experience because of this. We also frequently had to close the balcony door, because whenever someone decided to cook or smoke, the smell traveled right in. Aside from all this, the flat doesn't have a stove hood, so the smell of whatever you cook will also stay inside. This, unfortunately, had a big impact on our comfort.
This may be just us, but the people in the neighborhood didn't feel welcoming towards tourists/foreigners. We were yelled at by some people drinking on their balcony for "parking too close to their car" the moment we arrived. Tereza was kind enough to offer us a refund in case we didn't feel safe and I really appreciate this. But I will just be avoiding this part of Prague in the future just to be safe.
The other problem is the ants in the house. They weren't around when we first arrived, I believe due to recent cleaning. But they started showing up the next day on the kitchen top, swarming leftover food. I wouldn't say that this is a major issue, but an unpleasant experience nonetheless.
Having stayed at a few different places in Prague with similar prices recently, I am sad to say that this was the least comfortable and least fancy. If you are planning to spend most of your day outside and only coming home for bed and want to save some money, this may be the place for you, but the price should also come down a bit in my opinion.