Janeks is a really great host, he replies very quickly, and provides tips for local grocery stores, transportation etc. The appartment was very clean and, indeed, very sunny. The bedroom window/balcony opens to a small park with large trees. Very beautiful! The building is quite run down, but the appartment is nicely renovated. I would absolutely recommend it for travelers that want to stay in a calm green neigborhood and are not afraid of public transportation. Moreover, you get to see how the locals live.
We were travelling with two small children (we brought our own crib). The appartment is not super adapted for kids, but still OK. The largest challenge was the 5 floor walk-up. Though the stairs are not very steep and even my 20-month old could climb most of the way if holding my hand.