I really recommend Teresa's room. She is a very nice host, gave us very good tips about the city and was always available if we needed anything. She even let us use her washing machine, even if it wasn't included in the add. The room is in a two bedroom apartment downstairs from Teresa's own home and you will share the kitchen and a little living room with guests from the other room. The room is big and comfortable, and there is a private bathroom and a little courtyard in the back. Everything was perfectly clean and organized, there was even one of those things you put on the power sockets to keep the mosquitoes away. The place is a little far from the center of the city (you can walk, as we did, but not that close), but it's a quiet neighborhood, near shops and supermarkets, and easily reachable by bus. If you don't mind being not that close to the center, you should really go for it!