Luis' and Justus' place is a real gem, and Luis and Justus are fantastic hosts! The apartment is well worth the climb ten flights up (not too fatiguing, with nice broad stairs and deep landings between flights, plus they help you with the luggage). It's all dark wood and lovely pottery and paintings, high ceilings, open windows to let in the air ... just a lovely, cosy, homey place. Spotlessly clean, too! And that private bathroom is HUGE!
Justus and Luis are happy to leave you your privacy if you orefer, but if you choose to engage, they are both a lot of fun: well informed, personable, extremely friendly. Justus makes a delicious breakfast (he even found me ripe figs because I happened to mention that I love figs!) ... I just regret that I didn't prebook a dinner hosted by Justus!
If this apartment is available when you're planning your travel, grab it!