Backpackers Luzern

I booked this hostel before during winter time, it was good but this time was not as expected. The guests made the kitchen so dirty and one big group occupied the kitchen. The guests should be warned about the importance of keeping the toilet and kitchen clean. My suggestion is there must be some limitation for groups when using the kitchen for cooking. If there are 10 people in a group, allow 1-3 people for cooking, not all of them cutting, cooking, chatting, occupying the whole kitchen and others can't use the kitchen. Our payment includes the usage of facilities. This should be counted as a group, either a couple or a big group. Thank you.