Peter was very easy to deal with during the booking process and gave us a choice of 2 suites, we chose one with mountain views that actually had a good view of the strip from the main bedroom. The information from Las Vegas Suites was very helpful prior to our arrival.
The MGM Signature has a strict check in policy, that is, they will not let you check in early unless you have made prior arrangements with Las Vegas Suites (the receptionist made us wait in the reception for 20 minutes until 1pm exactly!). The reception does supply bottled water upon request.
The Suite was great for 2 couples and 2 babies, plenty of room for all of us (and our shopping!). We got used to the walk to the strip via the MGM Grand Casino, but you can walk down Harmon and into the driveway, which is quicker.
The furniture and furnishings are dated and some are a bit damaged, but was fine for our needs. The Signature pools were pretty quiet, as opposed to the crowded Wet Republic at MGM Grand.