Márcio's studio is a great place if you want to see Rio without paying the ridiculous prices you'll normally need to stay elsewhere. Lapa is a great area, with loads going on (though it can be a little noisy in the flat) and Márcio's studio is a great base, right in the middle of things, with the subway just a five minute walk away. The place is really secure, with friendly doormen working around the clock. The only downside is the tiny kitchen, which makes cooking a fairly unappealing prospect. Otherwise I recommend this for anyone wanting to see Rio on a budget.