I enjoyed my stay at Ella's rooftop apartment and with a couple of tweaks on her end and being sure its the right fit for you, I think it's a fantastic place to stay in the Seattle area.
The good/great: 1) Location! I wasn't able to rent a car but with being an avid runner/walker I was able to get to plenty of places on foot (went to the Mariners game at T-Mobile which was about a 25 min walk). Beware that Seattle is hilly so those walks depending on the direction you are going can be a little more challenging if you aren't in decent shape. I can't speak to the parking because I didn't have a car but I did see a couple of open street spots near the apt building when I was coming/going. 2) Clean, clean, clean. This place was spotless, I'm not sure what previous guests are referencing but it wasn't my experience. 3) Rooftop! It's not a huge rooftop and the apartment is right outside of it but that was a plus for me. Also I didn't see anyone on the rooftop area while I was there so no issues with noise or lack of privacy. The shade & blinds actually do a pretty good job blocking the sun and you do have privacy when you have the shade down (no one can see in when its down but they can if you leave it up, lol). If you are huge on being ultra private, I would look elsewhere. 4) Bed. Very comfortable and a full size so if you are traveling as a couple, make sure you are flexible with a smaller bed for two (worked perfect for me as a solo traveler).
The not so great: 1) Communication: While the visual guide to getting in the apartment is solid great it only instructs you until you get to the 5th floor and at that point, I was wandering around not knowing which apartment number it is or what code to use to get into the apt because that information wasn't in any of the instructions or check-in info. Ella had to provide me with the number & code and she wasn't as quick to respond which meant I was aimlessly walking around the floor trying to figure it out with no luck. I was able to hear back from her before it got too awkward but this information should've been provided via message or in the guide well before I arrived. 2) Building layout/access. You will need three different 4-6 digit codes to get to the apartment and the code for the main gate didn't work when I returned after 11pm (something a couple I met in the building alerted me to being the case) and I had to enter through another gate on the side to be able to get back into the courtyard. Also the no elevator/5 flights of stairs is real. If you are going to be packing with large bags or don't like to walk up that many stairs consistently, I don't think this is the place for you.
Overall, I think this apartment is a tremendous value/experience if you are in decent shape, pack relatively light, and will be traveling either solo or with a partner who is also of that same mindset. I will definitely be using Ella's place the next time I'm on a solo trip to Seattle.