When I arrived at 21:30 there was no one at the hotel to check me in. I received a complicated whatsapp message with poorly translated instructions of where to find the key card on the counter. I found the keycard, but neither the rooms or the cards were labeled. I put the card in the first room I saw, and it opened, so I assumed it was correct and I slept inside. Around 1 am, while I was asleep, someone opened the door to my room, and I was very scared. I was sleeping in my nightgown and told them to close the door, but it was impossible to sleep the rest of the night without fear that someone else could enter my room. There was no way to lock the room from the inside, and as a women traveling alone this is very scary, I put on all my clothes and just laid there until I could leave the next morning. In the morning, when I was leaving, I told the man who worked at the hotel what happened and that I was scared, and he proceeded to yell at me and tell me it was my fault because I had taken the wrong keycard that was meant for someone else. When I tried to explain that the instructions were extremely unclear and that nothing was labeled, he yelled at me even more, to the point where I started crying and left. It was a horrible, aggressive experience on my first day of vacation that made me very sad the whole day.