Should probably be UF cable and not plain old NM (Romex).  

Offer premium services like utilities, cable, internet and weekly maid service. 

Utilities (elect, gas, water, sewer, cable/int) will be covered by tenant.

This is a small project and should prove attractive to several banks if you are a qualified borrower.From a feasibility standpoint the first thing is to check with the city or county to determine what is required for all approvals including site plan and building permits, proffers, water/sewer tap fees, bonding requirements, inspections and CO process and time frame for all approvals.You mentioned utilities are in place but you need to need to check with the utility companies and get an idea of requirements to connect to the water, sewer, power, gas, cable, installation and connection requirements, tap fees, hookup charges, transformer location and relocation, power line and power pole relocation issues etc.Check to see if you have to install any manholes, fire hydrants, curb, gutter, sidewalks, street signs, street lighting any specific street design or access requirements,.Check DOT requirements for access, stop lights and permits, traffic studiesDWQ requirements for permits, permit fees, time framesThis is a broad overview of the process and your civil engineer can handle all of this but it's good for you to know exactly what's required.

And if you’re bringing in an electrician to fish cable, your budget is again in jeopardy.

Here is a quick high level summary of things you need to consider before you close the land.Check with the city or county to determine what is required for all approvals including site plan and building permits, proffers, water/sewer tap fees, bonding requirements, inspections and CO process and time frame for all approvals.You also need to check with the utility companies and get an idea of availability and cost estimates from them for water, sewer, power, gas, cable, installation and connection requirements, tap fees, hookup charges, transformer location and relocation, power line and power pole relocation issues.Check to see if you have to install any manholes, fire hydrants, curb, gutter, sidewalks, street signs, street lighting any specific street design or access requirements,.Check DOT requirements for access, stop lights and permits, traffic studiesDWQ requirements for permits, permit fees, time framesThis is a broad overview of the process and your civil engineer can handle all of this but it's good for you to know exactly what's required.

You also need to check with the utility companies and get cost estimates from them for availability, fees, hookup charges, transformer and power line/power pole locations or relocation requirements, water, sewer,gas, cable etcYou will need ball park cost estimates from site work contractors for site work, roads, installation of utility lines etc.

Equited with everything from kitchenware, to bathroom towels and sheets, cable and WiFi.

That increased the install cost as the installer had to dig a 300' trench to bury the cables. 

, any gas/water, what about cable?