We booked the entire apartment for 15 people. For the price we paid, it was an absolutely fantastic place. It's in the heart of downtown Lisbon with shops and restaurants right at the bottom of the building. It's extremely well maintained - sparkling clean, with a fridge, a washing machine, towels and a hairdryer. The check in and check out process was very smooth and well managed. The place has five bedrooms, and if you're 16 people, it's a very tight squeeze in the bedrooms with little or no floorspace in the bedrooms. You could always using the spacious living area to make this less of a squeeze. Each of four bedrooms have a queen size bed or two single beds with two draw open beds (four beds per room). The fifth bedroom as two single bunk beds and a draw open bed (three beds).