I dont know anything about the 7Seasons, but I like the location. Its on Kiraly utca which is an interesting authentic street with restaurants, wine bars, etc and its the border of the Jewish Ghetto. The walk to the main Christmas market is minimal too. As for breakfast even though my wife and I always stay in an apartment in Budapest and could save money by fixing breakfast for ourselves; 8 out of 10 mornings we go to nearby establishments for inexpensive food and socializing in the culture. I also noted that the cost of the 7Seasons in December was rather high. A hotel like the K&K wouldn't be much more I don't think but its been a few years since I have checked their rates. Also check the Opera Garden Apt Hotel. I hear good things about it. Any digs within a block or two of A metro stop on Andrassy ut will be the most convenient as there is a metro stop almost in the middle of the main Christmas market and there are some smaller market areas along Andrassy ut also served by the same M1 line, and finally Andrassy ut is all lit up for the holidays. I love Andrassy ut at Christmas.