We were looking for a hotel in a good location in Sunny beach and found the Atol. It's a short walk to the beach and near the Kuban hotel and Sunny Beach's busier areas, there's also a lot of shops nearby and a lovely restaurant next door. As we were staying at the hotel, they gave us a small discount at this restaurant. The room had a large balcony and was overall pretty clean. There was a few ants crawling which was a bit of a let down but we've had worse.
The room was a bit basic overall but fine for a short stay, there was also a fridge that we weren't expecting to see. The room had a TV, I slept on the sofa bed which wasn't as bad as I was expecting and there was air conditioning which in Bulgaria in summer is vital, but often missing in some hotels. (The air con unit was a bit loud so we had it off during the night). The bathroom was very small and that was pretty much the only downside, the shower was great.
Other minor niggles include the fact the balcony door handle was broken and the door to the room was hard to lock and open. The staff at the hotel were very friendly and helpful and I would recommend the Atol to others.