@Milton Carrillo your best bet is going to be to go to the city and speak with someone in the Building Department or Planning Department. 

If the PM is listing through AirBNB/VRBO you'd still pay those fees on bookings through those sites.In fact, I would bet a lot of PM companies calculate gross revenue before those fees are taken out, so they're actually charging you their 15-30% management fee on the VRBO/Airbnb fees you're paying, effectively INCREASING the Airbnb/vrbo fees, not lowering them. 

After some research and thinking and with all the help I received on this platform I have decided to go for it and treat it as a learning opportunity and to get ahead of the game.

As I can't ask the PM for lessons to understand if their work is done correctly or not, do you know an accountant who could understand the situation and put order in this platform, and tell me if the situation is worrying or not, I have no idea if it reflects a lack of organization or if Resman is simply used only secondarilyThanks in advance

This plan allows me to create my own lease or use one of their already created leases...it'll notify tenants of rent due, apply late fees (if necessary), tenants will pay thru the platform, and tenants can put in maintenance requests.  

I would say your best bet is just sitting down and seeing if they know their stuff.

I've read stories of mixed success with laundry vendors here on BP, but I guess it could be a safer bet with local companies.Would you manage your shared laundries in house given the option?

I think the sites and their estimates are pretty impressive considering they contain virtually every home in America, often with interior pics, but they are what they are: free tools that used automated formulas to predict something that can often be a bit unpredictable and can't fully account for the human emotional factor (for example I bet something like the Brady Bunch house zestimated far less than than its actual value)

I have always been earning my own income through several small online platforms and social media so I decided to save up for a hard asset such as this three family investment property.

I bet it's less than you could get somewhere else and you're building equity, learning REI, and taking positive action.