About Hiromi - Hiromi is one of the kindest and sincere people I've met. She really wants you to have a good stay and will do everything in her ability to ensure that. She left earplugs and two chocolates for me when I checked in. Throughout my 3-month stay, I called Hiromi to talk about issues (such as the some listed below), and she was more than helpful to get it settled.
The room - Imagine a hotel room with no attached washroom, that's what this is. There is a microwave and a fridge in the room which are both very handy. There however is no water filter/dispenser. The building, in general, is pretty old from what I can gather and the carpet has a smell. It is not bad enough to drive you out but it is there. And since you don't wanna keep the windows open (to avoid the street noise or cold), it's going to linger. I used to forget about it after a couple of minutes of entering the room but it is there. The tap also had hot water and Hiromi showed me that on my first day but I was almost never able to get hot water after. Though maybe that was probably my fault. Lastly, there's cleaning every Monday. There were two weeks where we didn't have any cleaning but Hiromi had informed us two weeks in advance that that would happen.
Two issues I had -
1. A rat got into my room - I think it bit a small chunk from one of my shoes and damaged nothing else. I informed Hiromi and she was very helpful. She got a pest control guy to come in and investigate while I was at work. She gave me a few mice traps to put around my room. We never caught it.
2. The common toilet and bathroom - Maybe this is just me being really spoilt but the toilet was a bit bigger than an airplane toilet and the bathroom didn't have that much wiggle room out of the bathtub either. I visited some friends in San Francisco and realized that this was pretty common with many other older houses. I, however, used to rely on my gym for showers.
Location - Absolutely fantastic! It is right next to Nob Hill and Union Square. It is just north of Tenderloin too which worried me at first but over time I realized that most people didn't really mean any harm. Also, this place is in the vicinity of a lot of hotels and restaurants and so nights feel safer than many other areas of San Francisco since there are always people around.
Noise - I felt like if you keep your windows closed, it's not that bad. I didn't have to use my earplugs.
Tl;dr the place is good for its price and since you are not paying that much, be sure to adjust your expectations. Hiromi is absolutely wonderful and she will take care of any issues you might face. I might stay here again when I'm back in San Francisco.