is the hutch outside? if it is and you let him/her out you may never get it back in, if its inside then you can try shutting door to room and then when ready to put back in sort of bring hutch closer and closer while shutting of area bit by bit.
as for water, if it is quite hot, he/she may need more. I used to change water daily so it could be fresh, same with food. Also, you have the task of cleaninig out the hutch...yuk