Translation of stipulate in Spanish

We could not believe how difficult it was to find a decent room in this four star hotel. I went to the reception desk and complained about our room and about the attitude and bad service.
Nevertheless, I agreed to go there and check it out. It looked much better than the one that we booked in advance and we decided to stay there for two nights. It had a great pool and we were welcomed with drinks.
The hill was not close to the village and we did not have a lot of water with us, so that we were happy when a Brazilian couple took us closer in their rented Jeep. We walked a little further.