We (couple in our late 20s) stayed at Stuart's place for 10 days on first arriving to SF.
The studio apartment is great, plenty of space for 2 people, all new and very clean amenities, comfortable bed and fluffy towels. The wifi was quick and reliable, I had to do quite a bit of work during our stay and we had no troubles.
The neighborhood is cute and residential close to a park with lots of familes, dogs and young kids around, but it is also a 10-15 min walk to 24th st in the Mission and all of the great food, shops and nightlife that area has to offer. It meant we had a quiet place to sleep but plenty to explore too. We absolutely loved this area but it should be noted you will need transport to reach the main tourist areas of SF, which could be less appealing if you are only in the city for a few days.
Overall we loved our stay and would recommend Stuart's place!