Great questions. Answer will depend on your overall renovation budget and projected use of the pool.

You may wish to track your use and cost (maintanence, electric, water, personal hours cleaning, chemicals)  for one year to help assist you with a renovation option.

In the Houston Metro Area our customers expierience an annual cost of about 1,500-2,000,  this includes electrical, gas, and chemicals.  

These numbers represent an average sized pool, average spa usage, and properly maintained pool chemistry.

A concrete pool can be a better option as it reflects back the stylish arrangement of the pool. It seems to be really trendy which most of the people are preferring to build in their new home. Moreover, buying the stylish set of a sofa which can be kept outside near the pool is another option you can choose to go with as it will add extra beauty to your backyard. A number of people are heading towards the genuine store like office furniture solutions in order to get the fair deals in buying furniture. If you want, you can also go this way and can give a new look to your backyard this time.