I don't know the cellular range in the room, maybe in that - failure, I had the signal range one line, and sometimes there was no signal. So I couldn't call either SMS or the internet. I didn't watch it in the hall I don't know, I didn't check it out, and outside it was OK. A fast free Wi-Fi network in the building saved me, and after that I am very happy with staying and part of the room, and I would love to go back to another room.
If there is a possibility, in the future, please try to get some GSM amplifier in the room or in the rooms.
Service help, try to miss the problems. Breakfast at a fairly good level, because of the poorly arranged meals on the tables you need to wait a little while to get something on the plate. Here you might need to change your organization.
Average rate in Sopot is super high. So ratio of price quality is fine. Clean but poorly furnished rooms, not sharp 4 stars. Recommended mot to overpay for airbnb style. 11:00 check out is ridiculous