>>49Above 72 fahrenheit (22 centigrade) I find sleeping quite difficult.
(If the air is dry, I can stand 23 degrees.) A little above that
temperature, a strong electric fan blowing on me enables me to sleep.
More than 3 degrees above that temperature, I need air conditioning to
sleep.
If there is a substantial chance of indoor temperatures too hot for
me, please arrange _in advance_ for me to have what I need.
If you are planning for me to stay in a hotel, DO NOT take for granted
that the hotel has air conditioning--or that it will be working when I
arrive. Some hotels shut off their air conditioning systems for part
of the year. They often think it is unnecessary in seasons when the
temperature is usually in the mid 20s--and they follow their schedule
like stupid robots even if there is a heat wave.
So you must explicitly ask them: "Do you have air conditioning? Will
it be functioning for the dates XXX-YYY?"
In some hotels with central air conditioning, it simply does not work
very well: it can make a room less hot, but can't make it cool.
Before using a hotel that has central air conditioning, find out what
temperature it can actually lower a room to, during the relevant
dates.
Or look for a hotel that has a real cooling unit in the room, not a
central system. Those tend to work well enough, if they are not
broken.