Oreo is a hotel recommender system based on the hotels that other users have already booked or viewed using the cosine similarity. These Hotels are located around Nairobi, Kenya. We would recommend hotels with the largest similarity to the ones previously booked or viewed or shown interest by the users. Our recommender system is highly dependent on defining an appropriate similarity measure. Eventually, we select a subset of hotels to display to the user or to determine the order in which to display the hotels.