I stayed at Sinaloa 44 November 19-25 by myself. It was a older apartment with squeaky wooden floors but quaint, clean, and spacious. My only complaint is that the mattresses are very firm. Otherwise very safe and centralized location with plenty of good restaurant/bars near by and walking distance to other neighborhoods. It was a good value for what it is but nothing fancy. Over all I enjoyed my stay and weather was perfect this time of year. For transportation I used Uber which is also safe and inexpensive for foreigners.
One thing I'd like to point out is how to operate the water heater for showers; hot water only comes out from the kitchen sink or shower but not from the bathroom sink.
Strange setup but I figured it out. Turn the knob on the water heater in the kitchen to just shy of 12 o' clock. At the shower open the hot water knob (left knob) all the way and leave the cold water knob closed; only use the knob on the heater to control the temperature. If you open the cold water knob the hot water will stop running and you'll be taking a cold shower. So, don't use the cold water knob at all.
I found that 40-42 degrees Celsius is the sweet spot on the temperature reading of the water heater. Once you see that temp you're good to jump in and the water temperature stays consistent.