We (my wife, our 7-year-old daughter and I) went just before Easter for 3 nights in April 2014: it was about 30 degrees. So, we cannot comment on the heating. The main museums (Prado, Royal Museum of Fine Arts, etc.) are within 1 mile distance from the hotel. We just walked everywhere. Hotel is clean, room service is every day. There is a bath and a shower. It was quiet. There are cooking facilities and a fridge. Breakfast, they just leave cakes and all coffee packets and cups in the room: you can have it whenever you like. The only thing is: the pillows are a bit small.