70 degrees F is 21.2 C....
Alexei, from the first hand accounts I have read was an interesting combination. At once polite, generous and happy and also stubborn, spoiled and demanding. He would just spontaneously give the soldiers he came into contact with toys for their children, guests almost unanimously describe him as pleasant,happy and a perfect little gentleman. Spiridovitch recounts this as well, but also that he was hugely stubborn and would say things like "I am your Tsarevitch, you cannot order me to come down from this tree" when his playtime was over and they had to send for the Emperor (or at least threaten to...) to get him down. Nicholas was the only person who Alexei minded completely. He was also very bossy with his playmates, one time hugely scolding a little boy who did not address him "correctly enough" in Alexei's opinion, when the boy called him "Imperalnaya Velyshistvo" rather than "Gosudar Imperalnayo Velysistvo Tsetsarevich Naslednik" which Alexei preferred (apologies if I butchered the Russian).