First of all it might be cheaper to 1. get a cleaning crew 2. order everything takeout and hire someone to cleanup afterwards. second of all the local bikur cholims should be able to help out with getting a good rate at a hotel I'm sure that unfortunately there are others that can't make pesach and need to go to a hotel. If that doesn't work for you then I suggest calling your parents rav and see what they suggest maybe people within the community can help out with cooking, inviting them for meals or put them up for the whole pesach even if your parents chip in for someone to host them it would be cheaper than going to a hotel and more relaxed to. Because if they have to worry about the expense of a hotel it will be on their heads the entire pesach certainly not worth the trouble.