This apartment is very nice but small. This was no problem for us, but if you like lots of space to spread out your things you may struggle. The shower is lovely, and the small balcony is a very nice feature. We felt safe and comfortable throughout our stay and Penelope was very easy to contact.
A few comments mention the stairs - the apartment is at the top, there are 48 stairs and I guess they might be narrow if you are less mobile or carrying a heavy suitcase, but we managed them just fine. One issue that is no fault of Penelope's is that some people came home at 6am on a Saturday morning and woke us up with their party going on until after 8am - I don't know if they were residents and whether this is a common occurrence, but be aware that if you are there over a weekend and this happens, the noise travels straight through the apartment walls.
Overall we were very comfortable here. There are plenty of restaurants and a Starbucks within walking distance, and we felt right at home.