When we were choosing this apartment we paid attention on wifi, because we work remotely and it was very important for us to have good internet connection. we asked the host about this again before we arrived. when we reached the hostel the reality was different and there was almost no internet connection (in our room and on the level above us as we knew later, maby everywhere in hostel). We couldn't open the web pages, we couldnt even write to the host on this site, so we moved to the cafe with wifi to have this possibility. He said that he will buy a router and fix the problem, we got it but the router couldnt help us, because it was difficult to set it up,it had a lot of settings that we dont understand and noone could help us with it, host didnt come by himself, so we couldnt do anything.
We also received the info that before us there were tourists that also had problems with wifi there and they all left very soon because of this. The host didnt give this info when we booked the room and wrote to him that wifi is very important for us. So we left the appartment the same day as we arrived there and lost some part of the money that we paid and lost almost the hole day trying to fix this problem, listening fairytales from the host and finally finding another place to live.
So if you need wifi dont book this hostel.