Hi Patricia! I'm sorry you've had such an experience.
Our profile clearly indicated 6 listings, and we have one extra guest, which is unusual, since he had been staying with us for a long time and he asked us for a couple of more weeks. At the end of our listing (for each and every single one), there is a short description in our profile that states that other rooms are rented (however, they are not always full, since it was exceptional given our excellent reviews the past year). You booked through 'instant booking', so maybe that part wasn't read? Only 6 people share 2 bathrooms (3 per bathroom, 1 for girls and 1 for boys usually), as I have my own.
Regarding the noise-level, as soon as you mentioned it, some solutions were put in place, such as making a general written statement and discussing directly with the persons that you mentioned. The other concerns weren't mentioned during your stay except for the noise and, consequently, I was unfortunately able to help you with those. The door is unlocked sometimes, but that's because people are in the house doing something, or I am going outside to take out the trash for example, and I'm sitting close by in the kitchen. I am at home almost during the whole day. As for locking, it is possible to ask us to lock your room while you're gone, as has been done in the past, but usually tenants are trustworthy.
Overall, I would say we had very good experiences with all our tenants, and that they are very happy living with us, as well as other people. The solution is to be able to create good social relationships, as bonding with other tenants always makes you feel like you're more at home. We had made a supper before you rented with us with other tenants, so I guess you missed out on that part. I believe you expected a more isolated rental, which is why you felt uncomfortable with other people surrounding you.
We carefully choose our other tenants, and make sure that their personalities are social, nice, open-minded and calm before letting them into our house. If they do not meet our standards, they are invited to leave. As for the food, this is the first time I hear you mention this, and I would've liked to hear it from you sooner to be able to fix that issue (no other tenant has ever mentioned such a problem).
We invite all of our guests to communicate with us beforehand, read the listings carefully, and ask all the relevant questions to make sure the living situation fits their needs. We are also very prone to communication, and ask every guest to communicate their insecurities or needs with us quickly so we can address them. The issues you mentioned are all fixable issues, and I would've been happy to address them even though you stay was two weeks only, to make sure you have a positive experience. Also, we expect tenants that value social bondings, and are happy meeting new people. I've met such interesting individuals since I started Airbnb, and it always makes me feel happy to see a home where guests become really good friends, and feel like they're at home themselves even though they are far away.
Finally, thank you for staying with us! I hope you find rentals that fit your needs and personality more next time, but if you ever decide to stay with us again, I would be extremely happy to address every one of your concern and establish a plan to make you feel safer and happier.