Alexander was a very welcoming and kind host. I stayed 8 days in a row in their house for a business trip to NTU and it has been pleasant stay overall. About 10min walk distance from Jurong point shopping mall / MRT / Bus interchange, and takes about ~20-30 min to commute to NTU.
A few things to note: 1) AC is only approved during 10pm-7am. 2) breakfast is DIY. 3) Don't forget to bring your own towel.