hotel reservation in Luanda / Angola

Hi

Angolan Embassy in Poland ask for the confirmed hotel reservation
to issue the visa...
Does anybody know inexpensive hotel in Luanda who can
send me such confirmation? or can send me just basic invitation
(documents aren't nessesary) ? should be send from Angola by fax

i have already visa fo Nigeria to start my trip at 30 June , but to
obtain Angolan visa.. everywhere you have to waiting 14 days ..
i won't spend 14 days in any African capital

Thanks...
Paul