Just finished a stay there: Meh. I come to Munich a bit so won't return probably, unless it's a price issue. I usually stay at the Le Meridien or out at Ostbahnhof and was hopeful for a new "go-to" hotel. I'm referencing the
Munich Marriott Hotel City West: Landsberger Str. 156, 80687 München

Location is a bit outside the city center, but there is a tram right in front of the hotel (18&19). Fairly easy access from the airport, since an 11 minute walk from the S-Bahn line at Hirschgarten. There's not much at all right near the hotel (unless you need a BMW at the dealership next door). Tram is easy to use, but slow. Lots of construction right in front of hotel, and the entrance is around back where the taxis drop off.

Inside: Hotel is BRAND new, with some fancy things like cool light controls on the wall, next to bed, nice TV, lots of outlets, USB connectors, etc. The regular room is pretty small actually, but very functional. No closet or drawers, a nicer version of Motel one if I'm not being generous.
Bathroom has a huge shower and a seat-warming bidet as standard. Water pressure was weak. Nespresso machine in room and I imagine you can simply request an iron and board if needed. Windows are new, so no outside street noise at all. Interior noise is there as you can hear neighboring televisions and some voices.

Staff is young, helpful, multilingual, for most it seemed like German was not their native tongue so is staffed for a multi-national clientele which is nice. Housekeeping will try to get in the room at 9am, so put the "do not disturb" electronic switch on-part of the fancy controls.

Lounge: Top floor new lounge with a nice patio and view tot he south towards the alps. Will be really nice in good weather!
The lounge is nice itself, but the food offerings were pretty weak. Breakfast and "snacks" at 5:30pm were minimal, a lot less than the Residence Inn and way below the Le Meridien. Was told that if you have lounge access you can upgrade to the restaurant for 12EUR to get a full spread. For such a nice lounge, it seemed like they were going for the bare minimum in terms of food offerings. Evenings-the standard white/red wine offerings and a fridge full of bottled beer (At least it was Weihenstephaner-one of the best in the city!)

Bonvoy: Uggh. You've been upgraded/bonvoyed! (To a high floor) Asked about a larger room (didn't say suite or anything) and was told that there were no rooms in the upgrade inventory like that---only higher floor rooms. Later that day, a staff person told me how empty they were and wanted more guests to come so I looked again at the rooms for sale and indeed many larger rooms and suites were available for sale (I'm Titanium) so the upgrade inventory is throttled. The hotel was empty-ish but I imagine they will have no issues filling it in the summer for the EM or during certain festivals.