House sale vs renting NZ

Needing some advice.

I own newish build house and have the option to sell it and make around 250K. I currently have a free house for work and my house is being rented out but with all the cost, interest, insurance etc I’m hardly making much off the rental property.

My question is should i sell and put that money in a savings account. We don’t want to go back to our property and will probably buy elsewhere in a year or two. It would be ideal to have the money and when something we like comes up and can buy it without the whole subject to sale saga.

Would it be hard to get another mortgage?

What cost/tax etc am i missing with selling vs renting.

Just any advice on this would be appreciated!