We enjoyed our stay in Sofia, and the Festa Sofia was an okay hotel. First thing that bothered me was the lack of air conditioning. They have AC, but they had already turned it off for the winter, even though the temperature was warm outside, and the sun really heated up the rooms. So we had to leave our window open, and it was really noisy outside. Other issues were that while some staff were very helpful, others could seem a bit short on patience when asking them questions. The breakfast was very good; I can say that! So for the price we got a good deal, and it was close to the conference we were attending, but if I was to go back I would definitely look into other hotels in the area before automatically booking the Festa Sofia.