It also depends on how old you will get! If you drink plenty of alcohol you surely need more money - but you might pass away earlier which makes it easier to survive with the 200 K
I wouldn’t make a contract for a full year at a hotel. I guess I would leave it open to maybe change after some months or half year. Maybe there is a big construction next to the suite in a few weeks, maybe you and especially the life’s get tired of the food and amenities and would like to stay somewhere else
I am sure your friend will be taken care of very well. Don’t forget that the hospital usually isn’t allow to give information on patients to „friends“ or even family memeberd without the permission of the patient himself. All ASQ hotels cooperate in Bangkok with great hospitals. So in case your friend is showing symptoms he is a very good hands. Hope you will hear from you friend soon and can both meet up soon after recovery/ negative tests