Updated on 18 Apr 2019
Hmm.. from your question, i'm guessing you're not that experienced with investing. You can start of with REIT ETF which is more diversified and cheaper than a normal REIT counter. Make sure you're investing using money you're willing to part with and do ample research before choosing which fund to invest.
You can take a look at this article by DollarsandSense: https://dollarsandsense.sg/investing-reit-etfs-singapore-5-things-to-know/